Considering the wailing/gnashing of teeth/foot dragging on ADS-B transponder requirements, even after very compelling increases in situational awareness for pilots and controllers were demonstrated, I'm not holding my breath. And we're still sorting out the 5G/radar altimeter interference issue.
Curious what sort of onboard gadgetry and (presumably ground based) computing power will be required to keep track of all those second-by-second position updates. 100,000 commercial flights worldwide per day x 2 hour average stage length x 3600 seconds per hour = a really big number. Then add business aviation, helicopters, unmanned...