Considering all the talk about AI risks, talk which has been put out by Altman and the others involved in this as much as anyone, I would say "good" would mean people who can be trusted to be responsible stewards of such a potentially risky technology. At the very least, that would mean people who (a) can act like mature adults, and (b) have a healthy amount of humility. I don't see either of those characteristics in any of the people involved in all this.