It's not entirely true that the sector produces nothing, but if you think about it, the whole US economy in the last 3 decades has been nothing but rent extraction.
Defense contractors charge maintenance fees both domestic and abroad. For abroad, the maintenance contract is a requirement of getting the deal passed through congress and is frequently more expensive than the gear itself.
SaaS charge monthly instead of one upfront fee for a well tested product that used to be the norm
Video games similarly have been transitioning to day 1 paid DLCs and monthly fees
Even the movie industry is a subscription now (streaming providers aside). There's not one movie, there's the MCU pumping out 3 movies a year for the last 20. How many movies from last year have a number in their name?
Then there's of course, the actual rents. And insurance. And taxes. Something has to give, but I fear it will be the humans.