How Did Anthropic Do It? (Ramp AI Index + Winter 2026 Business Spending Report)

The strongest signal in Ramp's transaction data isn't Anthropic's 24.4% adoption or the 70% first-time win rate over OpenAI: it's that the more expensive, supply-constrained product is growing fastest. Commoditization theory predicted that comparable models at falling inference costs would race to the bottom; instead, businesses are paying a premium for the rate-limited option while the cheaper alternative declines 1.5% in a single month. Scarcity functioning as a luxury signal in enterprise software is genuinely new, and the falsification test is clean: when Anthropic's compute constraints disappear, either the growth sustains (product moat) or it doesn't (scarcity moat).