Developers don't want to touch this. The amount of work it would take to turn an office building into an apartment building is more than you likely realise. Building code for the two are very different so fully gutting the building is first on the list. The amount of plumbing that would have to be added and so on. I'm not saying it's a bad idea. I think it's a great idea, but to get it done you have to make it profitable or the government will have to step up and hire engineers and contractors and operate the building after, which is of course comunism, and so will never happen. Full aside from the political issues, it just makes more sense to knock down the office building and build a whole new one that is actually designed for residential use. Too little too late no matter what happens with the office buildings. It should never have been allowed, from the start, for corporate entities to buy up housing at all. Not apartment buildings, not single family homes. That has to be fixed first.