The electricity and water systems, while definitely needing upkeep, don't need to prepare for a doubling of usage every few years.
Edit Plus, the electric company definitely does some kind of demand shaping: shutting off AC compressors on a rolling, as-needed basis. In water emergencies the water company will declare which days I can water the lawn or wash my car. "Utility" isn't synonymous with "totally dumb pipe."
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.
Edit Plus, the electric company definitely does some kind of demand shaping: shutting off AC compressors on a rolling, as-needed basis. In water emergencies the water company will declare which days I can water the lawn or wash my car. "Utility" isn't synonymous with "totally dumb pipe."