Compare moats
Up to three covered companies, band by band. Every call is a curated editorial judgment, never a disclosed figure — and every band carries its cited basis.
| MongoDB | Digital Realty Trust | RELX plc | |
|---|---|---|---|
| Moat rating | narrow The FY2026 10-K frames a 'rapidly evolving and highly competitive' database market where the principal rivals — 'legacy database providers and large cloud providers' — hold explicit advantages: 'longer operating histories, more established relationships … significantly greater financial, technical, marketing or other resources … broader global distribution,' and can offer competing products 'at a low cost or no cost.' A developer-mindshare and switching-cost position is defensible but not wide against that field. | narrow The FY2025 10-K's own competitive record cuts both ways. Item 1 says a "high-quality, highly interconnected global portfolio such as ours could not be easily replicated today on a cost-competitive basis," yet Item 1A concedes that competitors have "significantly greater financial, marketing and other resources and more ready access to capital" and that as rivals keep developing space, "rental rates may be reduced or we may face delays in leasing." A durable advantage that its own filing says new supply can price against is bounded, not unassailable. | wide Independent sources support entrenched positions in RELX's two content businesses. In legal research, a Stanford-led study of legal AI tools (arXiv 2405.20362v1, 2024-05-30, https://arxiv.org/html/2405.20362v1) says Thomson Reuters and LexisNexis "have historically enjoyed a virtual duopoly over the legal research market" (citing a 2006 article for that point) and "continue to be two of the largest incumbents now selling legal AI products". In scientific publishing, Larivière, Haustein and Mongeon in PLOS ONE (2015-06-10, https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0127502) found Reed-Elsevier published 24.1% of natural and medical sciences papers in 2013, the largest share, and that its Scientific, Technical & Medical division's profit margin "steadily increased from 30.6% to 38.9% between 2006 and 2013." RELX's 2025 Annual Report (published 2026-02-19) shows the economics continuing: revenue of £9,590m, adjusted operating profit of £3,342m and an adjusted operating margin of 34.8% against 33.9% in 2024, with 54% of revenue from subscriptions. The limits are in the same report. Its principal risks say "We operate in highly competitive and dynamic markets" that change with "technological innovations, such as the use of artificial intelligence" and "the entrance of new competitors". Exhibitions holds "a global market share of less than 10%" in "a fragmented industry", and the Chair noted "share price volatility across a number of sectors, including software and data services." Long-held positions in legal research and scientific publishing, with margins that have kept rising, support a wide rating. The main threat is AI-native competition, which has not yet slowed reported growth. |
| Moat type | switching costs A database is the system an application is built on: the 10-K states 'a database directly impacts an application's performance, scalability, flexibility and reliability,' and Atlas is 'our managed multi-cloud database-as-a-service' running the customer's live workloads — re-platforming a database is a rewrite, not a swap. | network effects Item 1 attributes the hard-to-replicate part of the portfolio to connectivity rather than to real estate: "the network density, interconnection infrastructure and connectivity-centric customers in certain of our data centers have led to the organic formation of densely connected data communities that are difficult for competitors to replicate." That community sits on over 232,000 cross connects in over 55 metros, so each network and cloud that lands makes the same building worth more to the next tenant. | intangibles ip RELX says its advantage is proprietary content and data. The 2025 Annual Report says it builds products by combining "our unique content and comprehensive data sets with advanced technologies", describes Lexis+ AI as "built and trained on one of the world's largest repositories of accurate and exclusive legal content", and cites more than 3,000 Elsevier journals including the Cell Press and The Lancet families. On the H1 2026 results call (2026-07-23, https://www.relx.com/~/media/Files/R/RELX-Group/documents/investors/transcripts/first-half-results-2026-transcript.pdf) the CEO said Risk grows by "leveraging our unique contributory and proprietary datasets, with over 90% of revenue coming from machine-to-machine interactions." Independent support comes from PLOS ONE (2015), which says libraries face a publisher oligopoly in which "each product represents a unique value and cannot be replaced". According to the annual report, in June 2025 LexisNexis agreed a strategic alliance with Harvey, an AI platform for legal and professional services, under which LexisNexis "will integrate its Lexis+ AI capabilities (powered by LexisNexis content) within the Harvey platform". Switching costs add to this: legal products are sold "on a paid subscription basis, with subscriptions often under multi-year contracts." |
| Leadership | co leader The 10-K positions MongoDB as the leading document database by developer mindshare but names 'legacy database providers and large cloud providers' as better-resourced rivals across the broader database market — a category leader within a market it does not lead overall. | co leader Item 1 claims the title of "the largest global provider of cloud- and carrier-neutral data center, colocation and interconnection solutions," but the Competition section names Equinix and NTT as operators of properties "similar to ours in some of the same metropolitan areas," plus Global Switch and regional operators abroad — a shared top tier on the company's own telling, not a solitary one. | co leader RELX's own 2025 Annual Report ranks its businesses as Risk "Key verticals #1", STM "Global #1", Legal "US #2" and "Outside US #1 or #2", and Exhibitions "Global #2". Independent sources, both dated, support two of these. PLOS ONE (2015) puts Reed-Elsevier first in natural and medical sciences publishing with 24.1% of 2013 papers, ahead of Springer (11.9%) and Wiley-Blackwell (11.3%). The Stanford study (2024-05-30) describes legal research as a historical duopoly of Thomson Reuters and LexisNexis, and found that "Lexis+ AI is the highest-performing system we test, answering 65% of our queries accurately." The publishing data is from 2013, Legal is second in the U.S. by RELX's own account, and the Risk and Exhibitions ranks are the company's own claims. That supports co-leader, not clear leader. |
| Pricing power | moderate Owning the IP and the roadmap ('the determination of which features are included in our free or paid offerings') gives real list-price control, but the same filing flags competitors offering database products 'at a low cost or no cost basis,' which caps it. | strong FY2025 renewals signed re-priced upward in every bucket — +27.0% on greater-than-1 MW space ($146 to $186 per square foot), +4.6% on 0-1 MW ($268 to $280) and +43.0% on other ($49 to $71) — and MD&A expects average aggregate rental rates on 2026 renewals to be positive against the rates currently paid for the same space "on a GAAP basis and on a cash basis." On costs, the filing says utilities expense "is our largest expense category" and that "the vast majority of the expense is passed directly through to our customers," which it credits with significantly mitigating exposure to power-cost increases rather than removing it. The cap: Item 1A warns competitor development could still force rates down. | moderate The 2025 Annual Report says RELX products "often account for less than 1% of our customers' total cost base but can have a significant and positive impact on the economics of the remaining 99%", and reports a group adjusted operating margin of 34.8% in 2025 against 33.9% in 2024. On the H1 2026 call the CFO reported a margin of 35.5%. He attributed the gains to cost discipline: "we focus on ensuring that cost growth remains below revenue growth in all of our businesses." The CEO said that "roughly 3/4 of the renewal value is coming from the Lexis+ with Protégé package", which means renewals are moving customers onto the higher-value AI platform. Independent evidence on Elsevier is older. PLOS ONE (2015) says libraries "have to manage with less as prices increase" and that, because of the oligopoly, they are "more or less helpless". It also found the STM division's profit margin never fell below 30% over the 1991-2013 period it studied. RELX does not disclose list-price increases. Most of the evidence is margin-based. The margins are high and rising, but management credits the gains to keeping cost growth below revenue growth, and the only independent evidence of price increases is from 2015. That supports moderate, not strong, pricing power. |
| Summary | MongoDB monetizes developer mindshare that began as open source: the 10-K notes 'we own the intellectual property of our offerings since we are the creators of the software,' which lets it run a 'proprietary software subscription business model' and control the roadmap. The durable asset is the document-model install base and Atlas's managed multi-cloud workloads, positioned for AI as 'the underlying database … capable of processing queries against rich and complex data structures.' The counterweight, in the filing's own words, is that the large cloud providers it depends on for Atlas hosting are also its best-resourced competitors. | Digital Realty rents space, power and connectivity rather than compute: at 2025 year-end its portfolio held 310 data centers and roughly 57.6 million rentable square feet across more than 55 metros in over 30 countries, about 84.7% leased, serving more than 5,000 customers. Two different businesses sit inside that footprint. The greater-than-1 MW wholesale side is a capital-and-power race — 769 MW of projects underway with 64% pre-leased, and land that "could accommodate over 3,500 megawatts of additional data center capacity" — where the 10-K names Equinix, NTT, Global Switch and "various private operators" as rivals and warns that added supply can push rents down. The colocation and interconnection side is the defended half: over 232,000 cross connects and the "densely connected data communities" Item 1 says competitors cannot easily replicate, reinforced by contracts the filing describes as generally running 5-10+ years on large deployments and by improvements "installed at our customers' expense." FY2025 leasing supports that read — renewals signed re-priced +27.0% on greater-than-1 MW space and +4.6% on 0-1 MW — while customer concentration is the offsetting exposure, with the largest customer at roughly 11.7% of annualized recurring revenue. | RELX sells information-based analytics and decision tools in four business areas. In 2025, per its Annual Report, Risk (LexisNexis Risk Solutions) had revenue of £3,485m and adjusted operating profit of £1,305m; Scientific, Technical & Medical (Elsevier) £2,714m and £1,035m; Legal (LexisNexis Legal & Professional) £1,806m and £415m; and Exhibitions (RX) £1,186m and £410m. The moat rests on content and data that are hard to replicate. A Stanford study describes a historical Westlaw-LexisNexis "virtual duopoly" in legal research. A PLOS ONE study found Reed-Elsevier the largest publisher of natural and medical sciences papers in 2013, and RELX reports that Elsevier articles accounted for "over 18% of global research output and 29% of citations" in its latest comparison. Risk is built on contributory databases such as the C.L.U.E. claims history database, which "collects and reports up to seven years of US personal automobile, property claims and small business information". The products are cheap relative to what customers spend: RELX says they "often account for less than 1% of our customers' total cost base". Group adjusted operating margin rose to 34.8% in 2025 and to 35.5% in the first half of 2026. AI is the main test of the moat. RELX is turning it into upsell: about 90% of Legal new-sales value now comes from the AI-enabled Lexis+ with Protégé platform, and Legal underlying revenue growth reached 10% in H1 2026. On the same call, an analyst cited AI-native legal players Harvey and Legora with combined annual recurring revenue above $400 million, and the CEO said RELX is "not going to be the leader" in the much larger legal workflow software market. RELX names the shift to open access as a principal risk for Elsevier. On the 2026 call, an analyst raised a U.S. OMB proposal to make journal subscription costs and article processing charges unallowable expenses on federal research awards. |
| Chain position | Layer-10 application-layer data platform — the operational database under AI and general software workloads. | Landlord to the AI stack — sells the space, power and interconnection that cloud, network and enterprise tenants run compute in (Oracle, IBM, Meta Platforms, AT&T, Comcast and Lumen are among the customers named in Item 1), with roughly 2.9 GW of total in-place IT capacity. | An AI-application-layer user of frontier models: on the H1 2026 call the CEO said RELX takes AI tools "from the sort of frontier lab companies" and runs them inside its own products on verified content. The 2025 Annual Report says LexisNexis will integrate Lexis+ AI capabilities, powered by LexisNexis content, within the Harvey platform. |
| Products (share / barrier) |
|
|
|
| Long-horizon vote | +0.13 at weight 0.20 · swarm neutral Editorial prior, not backtested. | +0.17 at weight 0.20 · swarm neutral Editorial prior, not backtested. | +0.30 at weight 0.20 · swarm neutral Editorial prior, not backtested. |