"Meanwhile, the ADS-B mandate in Canada has been under an indefinite suspension since November 2019. It was originally slated to begin in February 2021 but was placed on hold in response to stakeholder feedback."
IIRC a major sticking point was "antenna diversity": in addition to having something point down, Nav Canada wanted antennas pointing up for space-based ADS-B (NavCanada was an initial investor in Aireon).
But the extra antenna is still a bit pricey, but given Canada's vastness, satellites were the only way to get good overage outside of major urban areas.
NavCanada/Aireon would also be using 1090ES and not the UAT that the US allows for lower-flying GA planes as well.
However, if you're near the US border, your transponder can (IIRC) broadcast that you have an UAT receiver on-board (even if you have an 1090 transmitter), and the FAA's gear may send out UAT data (e.g., weather, UAT planes).
Have us Canucks even done ADS-B? The USA is way ahead of us on that one.