Anthropic's 24.4% enterprise adoption and 70% first-time win rate against OpenAI matter less than the mechanism behind them: the more expensive, supply-constrained option is growing fastest in a market that commoditization theory predicted would race to the bottom. The buried signal is the falsification test embedded in the data: when Anthropic's compute constraints ease, either growth sustains and it's a product moat, or it collapses and scarcity was doing the work all along. That distinction connects directly to the MIT CSAIL finding: if frontier labs can't reproduce their own compute efficiency, supply constraint isn't an accident of capacity planning; it could be a structural feature of how frontier models get built. The Morningstar review adds the third leg: CrowdStrike and Cloudflare received the week's only moat upgrades because AI expands the attack surface that security infrastructure must handle; the same logic that makes a rate-limited, reliability-signaling AI product more defensible than a cheaper, abundant one. Scarcity functioning as a luxury signal in enterprise software is genuinely new terrain, and the companies that understand it as a product design choice rather than a supply accident will compound the advantage long after the GPU shortage ends.
