Also how about bringing the water you purchased outside back to the room? Should be confiscated.
I don't know about the US, but I remember a European hotel investor claim that he usually only invested in hotels after they'd been through 3-4 bankruptcies, because it was first then that the price and debt load had dropped enough for the hotel to have a decent shot at becoming profitable.
I think if any hotel did those things, it would anger people enough to assemble and boycott the hotel. However the wifi thing they can just about get away with from a customer point of view, because you can kind of 'live without' internet in your room for a while, where as phone calls and water maybe not.
Oh and the barrier to entry to run a hotel is high, but the barrier to entry to provide clean and comfortable accommodation at a reasonable price is quite low. Long before AirBNB, holiday lettings of apartments (as I call them you may call it leasing/renting) have been popular. More income to the landlord, and the tenant saves money vs. hotel.
Some hotels in Paris tried that a few years ago. The FCC clamped down hard on attempts to block cell phones in the US. To report a jammer, call the FCC at 1-855-55NOJAM. Or "jammerinfo@fcc.gov". Or http://www.fcc.gov/encyclopedia/jammer-enforcement