Because the wealthy don't universally aspire to be evil overlords hoarding resources at the apex of a dystopian society, or to be the first ones up against the wall when the revolution comes?
I wouldn't make any such claim (the universality of it, anyway). But in a sci-fi scenario like the one I describe, I doubt "the good ones" are the ones who come out on top. And we can see quite clearly (by their actions if not their words) that many of them do, in fact, want to be hoarding resources at the apex of a dystopian society. "Evil overlords" depends on where you're standing, I guess, but I don't think "dystopian" can be considered controversial anymore.
> to be the first ones up against the wall when the revolution comes?
Well, that's exactly why the possibility of revolution must be managed. See: ubiquitous surveillance, automation and mechanization of the police and military, and general disenfranchisement of everybody and anybody in anything remotely resembling a middle class.