Think bigger. Earth will only be good for the next 2 billion years or so.

okay, for now I'll just continue to live in a tent in some Berkeley NIMBY's backyard for $50/week while I pick up whatever small time gig-app contract jobs I can. You've convinced me to look at the bigger picture. Our generation really doesn't deserve to benefit from any solutions anyway.

Not sure if humanity will survive next 2 years necessarily

How will any of this solve "affordable housing".

Well, it won't, but it's fun to fantasize about! Plus, who cares about homeless people now when we're comparing them to potentially trillions of future humans.

how does that solve anything now?

Sort of? I wouldn't want to cover a ton of the planets surface with low rise suburbs, and the hinterland requirements for cities are vast.

At the very least, moving heavy extractive industries out of the biosphere would be a sensible allocation of resources: metal and energy are common in the solar system, but life supporting ecosystems are not.