The implementation of rent control is usually a one act play with no follow up. Mamdani is proposing to do away with that. To freeze rent at 0% and increase the supply of housing by 200,000, which alleviates the supply issue and should in theory cause the price of housing to reduce. Also, kicking out landlords that don't maintain their buildings, and moving people off rent control if they make over a certain amount so that they can't horde the home.
Whether any of that works remains to be seen, but if that's what the people want, I say go for it, but in earnest. I get sick of people with ideas running, they get the mandate and then get hamstrung by jackasses that have no interest in any form of government working outside of whatever it is that the people who paid them want. If it fails fine, but it fails because it was stressed and pushed beyond what was capable. Not because of greedy b*stards.
All those bodega owners complaining about a government run grocery store were the same ones that were selling ziplock bags with 3 eggs in them for an arm and a leg.