Why are AI companies buying the teams behind your favorite dev tools?

AI companies are buying developer tools because the tools developers use to install, lint, run, test, and ship code are becoming part of the AI coding workflow itself. That is why recent deals involving Bun and Astral matter. In December 2025, Anthropic acquired Bun, the JavaScript runtime and toolkit built by Jarred Sumner. Anthropic framed Bun as infrastructure for Claude Code, Claude Agent SDK,