True. Expecting the super rich to be concerned a lot about the poor - especially when they aren't useful as employees, is quite a stretch.
Their wealth is more contingent on our consumption than employment status. If that goes, then you're looking at a zero-sum society where no new wealth is generated.
Ultimately people will remain enterprising status-seekers. Rich people can already sit around with their wealth doing fuck-all excepting consuming, and they don't.
Not useful as soldiers even, and that includes those on the enemy side.