It sounds like the openAI team is overburdened (I guess they aren’t AI super users yet) so this may be their only option. Easy entry into a key segment, at least for now, and locks out competitors.
As a competitor in that key segment I don't feel locked out. I could almost jump for joy that this very weak-tea move is the most they can do with that much money. They're just quintupling down on the technology of 50 years ago. There's no threat to me at all here as a creator of from-first-principles IDE technology.