Here's an old example https://www.biggerpockets.com/forums/432/topics/554933-cable...
This caused many days of customer support issues with their owned / not rented cable modem, and then very interesting discussions about the now separated cell phone bill and previously subsidized cell phones.
I think it took 2 months to sort those things out.
For at least 2 months they had to pay both the complex and comcast for cable in order to keep the cell phones from being disconnected.
Do not feel like it was a win for the tenants.
Asking residents to refrain from setting up their own wireless access points actually seems like it could be reasonable? It might lead to less congestion and better performance for everyone.
I'm reminded of my college dorm. Every room had an ethernet jack, and there was a communal Wi-Fi network, but students were asked to not create their own Wi-Fi hotspots.
[0]: https://www.fcc.gov/media/over-air-reception-devices-rule
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.