I have a cheeky idea - imagine you're a company (especially a games company, whose engine is a small part of the whole product). You want to cut dev costs by AI - problem is your 100k codebase is completely unknown to most LLMs. So you release all your code, and labs will gobble it up and train on it for free.
So come a year maybe, suddenly ChatGPT or Claude will know the code like the back of its hand.
Corollary: get other people to spend their tokens on PRs