I'm not talking (just) about the USA. In my buble people often hoard properties to let but many just hoard them because they can and taxes are (too) low.

I'm not talking (just) about the USA. In my buble people often hoard properties to let but many just hoard them because they can and taxes are (too) low. Someone has an advantage in income, access to financing, reaches a threshold and 10 years later they flip 10 houses, all payed by not so fortunate tenants, and the owner thinks he's some kind of rightous capitalist. The whole rent-seeking behavior is a scourge on society.