If they can't be raised, and the costs end up being ruinous to the landlords, they will find other solutions like mass arson. That isn't hyperbole; this was a serious problem in the 1970s: https://en.wikipedia.org/wiki/1970s_South_Bronx_building_fir...
That was obviously not acceptable... but it was predictable.
All legal proposals should be viewed like a chess move. Presume others will respond, and make sure you're ok with that response. In a sense that's also the point of the original article too, a law was passed without adequqtely thinking through what would happen.