The problem is the subjective definition of "succeeded", it's never going to succeed on all counts because the problem rent controls is dancing around is not en

The problem is the subjective definition of "succeeded", it's never going to succeed on all counts because the problem rent controls is dancing around is not enough supply, and so the solution it's offering is just to change who the winners and losers are in a way that is more acceptable to voters than the status quo. So by that measure they're a success in all the places where voters keep voting for them.