Remember I will not debate legalities but having lived in such a place, they gave access rights to just one provider. If you get another they may be blocked from access to the building's rooms to place wires and equipment.
If you go with cellular they can't stop you.
Note: Edited for spelling error.
When my daughter moved into an old hotel (now apartment building) in Chicago, she was told her only option for internet was Comcast Xfinity because the building was 'set up' for it. Can anyone explain this to me? Internet access is not provided by the management and not included in her rent. Do they somehow block or degrade other provider's signals? What prevents her from signing a contract with a different provider?
This past year she has had a Comcast contract for internet only which ended last month. For this month and going forward, her bill has more than doubled, making me wonder again why she can't look for service with a different provider. The management company rep is not being very helpful answering this question for me.