Verizon tried to get in Canadian market in 2019ish but top three telecom formed a mafia and didn't let that happen. Same thing with Delta, would be a much better alternative to Air Canada.
Verizon was already in the Canadian market once before, holding a sizeable stake in Telus. I would say that they, along with AT&T owning a stake in Rogers during the same period, and of course AT&T also establishing Bell Canada earlier, are responsible for the present state of telecom in Canada. There were a number of other players who were trying to compete, but is wasn't easy going up against the offspring of the American behemoths.