I hope he just goes ahead and makes it, regardless. But I wouldn't be surprised that, if he does have the courage to do it, other more timid Hollywood types might actually be emboldened to come out and support him. There have got to be some others who aren't totally left-wing bonkers, and maybe he'll encouarge them.
Hollywood is a slowly sinking ship anyway. Technology prices have come down to the point where you don't need a huge budget and the backing of a Hollywood studio to make a *really* good film.