The electricity and water systems don't benefit from their component costs being cut in half every few years. This isn't some situation where people just unreasonably expect better service for no reason, the technology gets better and cheaper.

Furthermore, Internet bandwidth is not a commodity like electricity or water. There's no supply to diminish. What the telecoms want to do is more like if suburban streets were toll roads, Amazon owned the toll roads, and Amazon wanted to add a "congestion" charge for trucks carrying non-Amazon packages.