I actually think there's a business to be had here.

As described, the landlord can't offer a traditional lease for the actual value of the space.

However, the landlord could offer essentially day rentals without creating a lease. There are systems for this already, such as Peerspace and their ilk, which I've used for small events. I believe these don't trigger the foreclosure clauses.

I think that a property management company managing deeply underwater buildings could play in this, reducing their cost structure by offering day rates. They've often already got a solid NFC entry system. Most of what you need is automated pricing, onboarding and offboarding, and figuring out how you avoid needing physical cleaning/setup/teardown overhead.