They did not. Anthropic is protecting its huge asset: the Claude Code value chain, which has proven itself to be a winner among devs (me included, after trying everything under the sun in 2025). If anything, Anthropic's mistake is that they are incapable of monetizing their great models in the chat market, where ChatGPT reigns: ie. Anthropic did not invest in image generation, Google did and Gemini has a shot at the…
that's just it, it has been proven over and over again with alternatives that CC isn't the moat that Anthropic seems to think it is. This is made evident with the fact that they're pouring R&D into DE/WM automation meanwhile CC has all the same issues it has had for months/years -- it's as if they think CC is complete.
if anything MCP was a bigger moat than CC.
also : I don't get the opencode reference. Yes, it's nice -- but codex and gemini-cli are largely compatible with cc generated codebases.
There will be some initial bumpiness as you tell the agent to append the claude.md file to all agent reads -- or better yet just merge it into agent file.) -- but that's about as rough as it'll get.