The Hollow Commons Schism Pattern

When an AI-powered downstream fork produces improvements that the upstream community refuses to accept, the commons splits into an AI-accelerated branch and a human-maintained branch. Bun’s Zig fork is the first concrete instance: Bun achieved a 4x compile speedup via parallel semantic analysis but cannot upstream it. Zig’s core team has technical objections to the approach (non-deterministic compilation), but the AI contribution ban forecloses the collaborative path to resolving them. The pattern extends beyond Zig: Gentoo, QEMU, Ghostty, and curl have imposed their own restrictions, from outright bans to shutting down contribution channels entirely. The AI-accelerated fork iterates faster but loses institutional knowledge and review culture. The human-maintained branch preserves community integrity but forgoes improvements. Neither has what the unified project had.