The studies are clear, rent control is a benefit to a few but long term doesn't really add much value and instead makes the market stagnate in funny ways.
"Economists from both the left and the right have a well-established aversion to rent control, arguing that such policies ignore the message of rising prices, which is to build more housing. Studies in San Francisco and elsewhere show that price caps often prompt landlords to abandon the rental business by converting their units to owner-occupied homes. And since rent controls typically have no income threshold, they have been faulted for benefiting high-income tenants."
This is what would really help with the housing problem
"State Senator Scott Wiener, a San Francisco Democrat, offered a bill that would essentially override local zoning to allow multiple-unit housing around transit stops and in suburbs where single-family homes are considered sacrosanct. The bill was shelved in its final committee hearing this year, but Mr. Wiener has vowed to keep pushing the idea."
But the NIMBYs killed it for now https://www.nytimes.com/2018/04/17/business/economy/californ...
> This bill will provide millennials with some extra security so they know their rent won't be spiked and they'll need to move.
I'm not sure that's how rent control works. Unless I missed something, your rent is only capped if you don't move.