Completion API for GPT-4 will be there soon. With extra stop tokens, but better than nothing. A compromise.

And it's not like what OpenAI did was an impossible magic trick. They've had a right team composition. And three insights. All present in the literature. Repeat that, you'll have GPT-4. But GPT-5. Well, that one is different game.

As to being open, they are still relatively open. Consider Apple, for example. No one complains about Apple being a bit skittish. Well, OpenAI got a bit skittish too. It's a period. They'll stabilize. And their setup of the company, with the non-profit board in control, profit caps is a really interesting try at the corporate design.