the answer to that is a bit boring and less two dimensional. it took about a year for that to happen, from 2016 to early 2017 if memory serves. if you want to know what really happened, he tried, made a commitee, they took polls, surveys, townhalls, all the answers were conflicting, there was no consensus on a single system. he also didnt want to force his own prefered system that was popular with liberals (ranked ballots) as it would have looked like he was trying to service liberals, where as the others leaned towards proportional representation, which would have lead to things like fringe groups (think freedom convoy, proud boys, anti vaxxers, pro lifers, western and eastern seperatists, etc etc) having more sway and power over policy. imagine maple MAGA and western seperatists having more say now during all this 51st state bullshit.......wouldnt be very fun to deal with.

Trudeau made a clear promise, explored it seriously, but ultimately abandoned it due to a mix of political risk, lack of public agreement on the replacement system, and competing national priorities. trump being a twat, and all that other fun stuff. Critics said he bailed when it no longer suited him; defenders say he chose caution over forcing a divisive change. Both are kinda right.

its a milktoast answer, but the truth usually is with canadian politics. occams razor and all that. i know pierre and the cons werent running on election reform either this time around. so at least he got that conversation going and began the study for a future government to reference down the line when it comes up again.

i hope our system continues to evolve to better suit canadians down the line. and educate us properly so we can all make informed decisions on policy rather than red or blue tribalism like the US. thats not who we are. and we should continue to refuse that way of thinking. its beneath us.