Landlord tenant law does not give you the right in this case if the internet provider owns the wiring. Without knowing the facts, we can only surmise that the chosen provider for internet service wired the entire complex and actually owns the wiring which is why you cannot use your free will to shop for alternate providers.
The best way to explain it is that the owner has the discretion to make the rules which unfortunately put you at a disadvantage. While extremely incovnenient, you could protest the provider and only use the internet on campus which is probably free. That would save you substantially but inconvenience you even more than most college students could handle.