Rev sharing agreements can be quite lucrative for the building owner.

Here's an old example https://www.biggerpockets.com/forums/432/topics/554933-cable...

The last apartment I lived in (2019) was in the process of switching to building-run Internet, forcing us to give up our individual cable modems for the building WiFi. They had something like a limit of 15 devices you were allowed to connect and no Ethernet/wired, it was WiFi only.

When I talked to them about it they seemed completely befuddled as to why someone might need more than 15 WiFi connections or why someone would need a wired connection.

Thankfully I was moving out and just slow-rolled giving up my equipment until I left.

Had this in China years ago. The solution was we dressed up a worker from my fiber optic provider in a borrowed cable provider uniform to haul the cable. It took months to arrange, but I was pretty amused when it worked!

Get a mobile hotspot. I've been using one (Verizon) practically as my only internet provider for a while now. 5G up and down speeds are totally acceptable for everything I do. And there's nothing an apartment complex can do about it. You can also share your phone's internet with other devices. Obviously the real answer is to not live there! But if you must, it's not an internet death sentence.

Amazingly, those are advertised as "included amenities", as if they were a good thing. I'm sure a large number of people are fine with the idea of a managed internet - or they just don't understand.