I do not hate billionaires for being billionaires. But I'm against a system that unjustly and inefficiently concentrates wealth in the hands of fewer and fewer people while basic necessities such as housing become unaffordable because the beneficiaries of that system are turning it into an investment through which extract more wealth from the people below themselves.

Billionaires create many things millions use. Just because they have a lot of money didn’t make them intrinsically bad.

To illustrate how bad this argument is. Middle Ages nobles made contributions to society in the form of collecting taxes, managing land and organizing armies. That doesn't mean that feudalism isn't a bollocks system nor that you shouldn't come up with ways of collecting taxes, managing land and organizing armies that don't incentivize privilege and corruption.