There are rental multi family units and single family homes.
Dense multi family units - companies can go crazy building and renting them out.
Single family homes is a special American dream. Having them subject to rent seeking greed is not great.
It’s along the same lines of cities saying - in this zones you can’t have Airbnb short term rentals, in this zone primary home owners or second home rentals only, in this zone go crazy capitalistic do whatever you want.
I honestly don’t care about billionaires. But if they are taking a huge pie away from finite resources like livable land/housing, then that is a problem.
Focusing on income inequality or giving free money as universal income is wrong way to look at it.
We just need a healthy distribution of finite resources that yield supply of basic needs.
Needs being Food, water, electricity, internet, housing, clothing, transport, electricity, healthcare etc.
Price gouging of utilities is restricted, no reason why we can’t encourage building more homes and ensuring a healthy gradient of distribution.