That’s an uncompetitive market. No one can outcompete on service, so they can only compete on price, but why would you in such a circumstance, it would only hurt you, so nobody does.

This is what people seem to forget... you don’t need monopolies or collusion for markets to be uncompetitive. Collusion works fundamentally because participants aren't competing with each other... not for the fact people made a secret agreement. It is entirely possible for markets to be completely uncompetitive even without a monopoly or any collusion going on.

Your examples here are better known amongst economists as the Bertrand–Edgeworth model (https://en.wikipedia.org/wiki/Bertrand%E2%80%93Edgeworth_mod...)