You don't need a study to tell you that if you make things more difficult and worse for landlords, the housing supply will decrease.

Courts actually need to do their jobs here for an optimal solution - e.g. it should be easy to punish shitty landlords AND easy to kick out shitty tenants.

It shouldn't take a 1+ year wait (as during COVID) to get a landlord-tenant court date to resolve issues.

The housing issue is multi-faceted however, so that's only 1 piece of the puzzle. But thanks to NIMBYs and building code overreach, it's literally impossible to build affordable housing that would rent at its own depreciation schedule.