Unfortunately that kind of generalization being inaccurate is exactly what makes this problem so difficult. Every case needs to be judged independently, but that takes a lot of time and effort that no one person individually has.

A corporation is purely a legal structure. There exist people who do actually spend their time "doing good", and they too use such legal structures when that's helpful.

It's unfortunate that so many were deceived by Sam Altman, and that the majority of OpenAI employees voted money over honesty when they had a direct, hugely impactful vote. On the other hand, it's not like Altman's history was a closely guarded secret, it was quite easy to look up. So ironically this in itself is a great example of a decemption that could've been prevented quite easily by some cursory research and solidarity.