While it's pretty funny that one of Microsoft's crown jewels gets shit on with AI, I don't want to start the pro- or contra AI discussion, but what now? They reverse engineered or rebuild, or however you want to call it, all of Office, Autodesk, hell, for the fun of it do SAP next. Even assuming a perfectly working copy, not getting sued into oblivion, and not the dude going into bankruptcy due to Claude token costs - but what now? There is no way they can manage several repositories of this size alone properly (no, claude doesn't count). There is no way this gets the community and traction to self-manage.
Apart from a ridiculous invoice from Claude and proof that frontier LLMs can reverse engineer / clone well (...duh), this is a big pile of nothing.