I don't have a magic answer for how to get people on board, but I can say that I make a lot more than that number, and my taxes (in Canada) are way too low.

I think some of it is the psychology that government is incompetent and will just waste the money anyway ("let Bill keep his money and build toilets in Africa himself, at least he'll get it done"), and the best way to fight that is probably what Carney is trying to do right now: kick off a bunch of ambitious programmes to build new things like pipelines, rail, airport expansions, etc on an accelerated timeline. Perhaps if people see visible progress they'll be more open to saying yeah okay, I'm all right with paying more to live in a country where we get stuff done.