I do agree that we should focus on other remedies such as building more. However, even in a market with ample housing, I'm not convinced that some Landlords would still just as happily take the 'I bet they'd rather a 10% rent increase than deal with the hassle of moving' gamble.
Most of the people I've met who are anti rent control/stabilization usually don't have the pleasure of a landlord who has decided to engage in such tactics. Almost always they argue from some place of guaranteed housing safety.
this is an issue that applies to people making 30k and also people making 300k.