The above does not prove that it is irrational for Anthropic to keep the Claude Code source code closed. There are many reasons I can see (and probably some I can’t) for why a closed source is advantageous. One such (mentioned in various places) is the value-add of certain kinds of analytics and or telemetry.

Aside: it is pretty easy to let our appreciation* of OSS turn into a kind of confirmation bias about its value to other people/orgs.

* I can understand why people promote OSS from various POVs: ethics, security, end user control, pro-innovation, goodwill, and so on. I value all of these things. But I’m wary of reasoning and philosophies that offer merely binary judgments.