In corporate hellscapes like the USA, there is often no choice in ISPs, either because other ISPs can't justify the infrastructure investment to set up in opposition to the incumbent, or because the incumbent has lobbied local government to make use of power poles/conduits exclusive to them.
Sure, but this was in specific reference to “My ISP”. I can understand no choice in a hotel/cafe/etc. But there’s now lots of choice for home internet. Wired, cellular, even Starlink.