Considering those are the exact markets being discussed .......You got to be joking, right? Considering how many markets are near monopolies or at least duopolies, what choice do people have?
Routers and Smartphones might be two of the markets where there's still some competition left.
Sometimes consumers can't even vote with their wallets, which is what you propose is the only way things should be done.
Well, you live in a dream world.
AND many of those other markets remain without competition because regulation creates too high a barrier of entry for competition to bloom.