alt Hacker NewsCommercial buildings can't be easily converted into housing that provides the same return. Once the current owners have gone out of business it'll be profitable to turn them into flats.
The arguments against conversion assume you care about the current owner's financial situation.
It's not so much the owner's financial situation, but rather that it'd be cheaper to build new homes than to retrofit a ten floor+ building's plumbing.
You'd also have to install a bunch of showers, which could be a significant problem on its own.
And then there's the increased amount of sewage, which the building might not be able to handle - even the local sewers might not be equipped to handle the uh... Load a large commercial building would generate with 24/7 occupancy vs 8/5 occupancy.
The reason you don't see folks converting commercial spaces into residential isn't because it's not wildly profitable, but because building new purpose-built residential buildings would be cheaper than a conversion for anything other than one or two floors.