It's not a black hole. It's nearly completely paid back to Canadians evenly such that most Canadians get more back.
What's also neat is that every single province could do exactly what you're suggesting. All the federal government mandated was a price on carbon, each province could implement whatever system they wanted.
Like everything these days, our worst problems are at the provincial levels, and people don't seem to understand or realize that.
No city can just build alternatives if they don't know where the demand is.
Before a city can justify building anywhere,there needs to be demand. Both sides need to increase in stride.
Viable, but not perfect alternatives do already exist, and if more people use them they will get better, that is exactly what putting a price on carbon does.