Imagine you wanted to sell your Facebook stock once it starts crashing (to buy another stock that maybe performs better) but the government says no you can't because Facebook employees will be affected so not only are you obligated to hold the stock, but you'll also need to pay out of pocket to keep it.
Just to be clear, I have no sympathy for the slumlords and rental corporations, I'm talking about regular folks that chose the rental market as more risk-adverse investors and maybe put all their savings into a single property that they fixed up and are maintaining themselves.