Earlier quoted context omitted.
Last I heard there was a housing shortage. Obvious solution would be to turn commercial properties into residential ones.
It's obvious but not easy. Oftentimes commercial spaces don't have a lot of plumbing. They usually just have the one bathroom and kitchen space per floor usually in the middle. A large office space would need walls and a lot of plumbing work to convert to apartments (and probably a lot more electricity to power multiple kitchens full of appliances).
I view this as an "outrunning the bear" situation. I.e. you don't need to run faster than the bear, just run faster than your poor friend.
The cost to convert an office tower into apartments is high I'm sure, but is it higher than building a similarly-sized apartment tower from scratch? A lot of money goes into the foundation works and soils engineering.