The Liberals have allowed this project to scope-creep to a point where it certainly can‘t „100% happen“, as neither the federal government nor the private investors have $40+ billion lying around to pay for it. That said, there certainly is enough fat to cut away to still fund and build something much more modest as a „Stage 1“, thus allowing PP to not just humiliate the Liberals by „by cutting through Liberal waste“ but also by „actually getting things done instead of lofty, but unfullfilled Liberal promises“.
My prediction is that neither 100% nor 0% of the lofty promises we are hearing from the VIA HFR-TGF folks and their political masters will happen, but maybe 10-20%.
A 200 km/h fast Montreal-Ottawa corridor with hourly service which can be built within 5 years and will form the foundation of any future HSR network would certainly not be the worst-possible outcome…