I'd say it's almost impossible at that point. Specifically, Altman said so many lies in the past that people stopped believing anything he says.

I think the core of this distrust is the fact that these companies positioned themselves against humanity from the start by saying people will lose most jobs etc. Not only it didn't happen, but many people feel several aspects of their lives got worse because of LLMs, in spite of obvious advantages. So the distrust and reluctance are real.