Four to five years of monopoly in enterprise AI search is an extraordinary runway that most startups never get. The resulting head start in integrations, customer trust, and institutional data access may prove more defensible than any single model capability — a moat built on connectors and enterprise relationships, not algorithmic advantage.

这个脚注意味深长：微软（Maia）和 Meta（MTIA）的自研芯片被 Epoch AI 认为「影响可忽略不计」。对比 Google TPU 的主导地位，这说明自研芯片的成败取决于是否愿意长期投入——Google 从 2015 年就开始研发 TPU，整整比竞争对手早了近十年。先发优势在芯片领域尤为致命。