Both rent stabilization and rent control are extremely bad ideas. They have the same effect that other price controls have - they create shortages of the things being controlled.
The experience of rent control in almost every place that’s tried it has been to stifle mobility of the population, reduce investment in making new rental properties, reduce investment in maintenance of rent controlled buildings, and increase the supply of condominiums, often by owners converting apartments into condo units.
High rents are an important market signal - they choke off demand in an environment where there is a shortage of supply. They ensure that only the people who really, really need to live in an area of high demand actually live there. They force inefficient, labor-intensive businesses to relocate or open in areas that are in less demand and where workers can afford to live. And at the same time, the higher rents stimulate investment in rental properties, helping to ease supply problems.
All of this is very important to a well functioning market. But when you cap the price of rents, or control the increase in rental prices so they can’t grow with the demand for housing, you simply create a situation where the people who are already in the rent-controlled apartments get a bargain, while increasing shortages for everyone else make rents and purchases even more expensive. Then the government usually gets involved and starts subsidizing housing to make it ‘affordable’, which further chokes off the market’s ability to control demand by increasing cost. So demand never decreases, and the problem just gets worse. Only now taxpayer money is also flowing into the system (and into the pockets of the people who own the real estate, who are generally already wealthy).
Rent control is an attempt to deny reality by fiat. It always fails. It’s one of the worst ways that the market is commonly manipulated by governments. And they never seem to learn. My city is now toying with the idea of rent controls, despite the fact that when the NDP tried them in Ontario it was a complete disaster.
The other problem with rent controls is that once they have been instituted they are almost impossible to remove, because the people in the rent-controlled apartments rapidly find the non-controlled real-estate increasing in price until it’s well out of their reach. So a few years after rent control comes into effect, removing it would essentially mean the wholesale evictions of hordes of people, possibly right out of the city. So you wind up with those abominations where the existing tenants get grandfathered in, and one neighbor pays two or three times as much rent as the other due to an accident of timing.
Rent control: Just say no.