This isn't capitalism.
The middle class has been made wealthy by the government/Fed. The government is doling out cash at a furious pace.
Honestly, I have never seen the price mechanism function this badly in my investing career (10 years). And I studied economic history, and there are relatively few parallels to what the govt is doing now.
Whatever happens though, this isn't capitalism. Failure is the most important part of capitalism. The politics of today mean failure cannot occur.
Btw, to be specific, the stuff you are seeing in private equity (not just in the US but Europe) is just totally insane. Gambles that should have failed are returning 10x, money is being raised for non-productive purposes at 2% whilst you have consumers struggling for finance. The homeless situation in the US is intolerable. Some US cities are third-world, every bridge has people in tents underneath.
I can see why people think the system is working, it has made the already rich unimaginably richer...it isn't capitalism, it is an aristocracy. It is appalling that some people justify their theft by saying they deserve it (an unfortunate consequence of capitalism is that the winners feel justified).