I work in the adaptive reuse industry converting history office buildings into hotels or apartments. We've looked at a number of modern era office towers, and housing is simply not viable. To your point though.. ironically, urban factories and warehousing seems to me to be the best use. Can you build a small electric vehicle or iPhones with the assembly line going from top to bottom?
Banks are already there for unloading these properties. I can show you million-square-foot office towers today that are essentially free to acquire, but you get to pay tax, insurance, maintenance, keeping the lights on and functioning for any future use, a few million a year minimum, with no revenue.
Some groups thought they could mine bitcoin, but the floor fell out of that. At the end of the day, since there are substantial costs involved with the tower itself relative to a warehouse, the tower should used for something that also requires a large number of people. A datacenter-type use is best if located near cheap electricity - not usually city centers.
Lastly, office towers are usually located amongst excellent mass transit, even in cities with poor transit options, but the typical office tenant (bankers, lawyers, financiers) will not accept mass transit as an alternative to 1 parking space per employee. But factory workers will if it works!