I think in an ideal world you’re right. Ideally if housing costs were too expensive I would just move somewhere else. However we live in a world where there are borders and immigration policies and violence and relationships and jobs and climates that make moving around hard. Housing is a hard problem because there are limited resources for where people want to/can live. It’s a type of natural monopoly. I’m pretty sure history has abundant examples of what happens when you allow natural monopolies to run unchecked. Personally I’d rather have a mismanaged democratic government in charge of the monopoly than any private entity.