Because at some point keeping it up involves filing an S-1 that doesn't look like a garbage fire

Well, they do rug pull constantly. This week and last leading up to this the cost to use Codex was overwhelmingly perceived as terrible. People running out of usage all over the place. Reddit full of people crying. I noticed it myself.

Then they do a new model launch, issue quota resets all around, and it's a party for 2-3 weeks before things return to normal.