You may be underestimating the resentment with current duopoly operators in the US. I live in a dense city and I would switch in a heartbeat even if Starlink didn't offer better/faster/cheaper service. Just being on par would be enough.
And just imagine the possibilities. once you can get your ISP internet anywhere, you won't even need a data plan on your phone anymore (just hook it up to your ISP). In this case i would be willing to pay a bit extra for that.
Anecdotal, but I remember someone on Reddit from Kansas City mentioning that Time Warner had offered them something silly like 100M/10M down/up for more money than the incoming Google Fiber was going to be (for 1Gbps synchronous).
I have no idea what the situation is like now, but I'd imagine it's gotten better. They aren't going to sit around wasting money when infinitely better tech is knocking on their front door.
have you checked what internet costs in other countries?