This already kinda exists in the TV sticks like Google TV in that all recently watched / continue watching is a mix of different services that open the correct

This already kinda exists in the TV sticks like Google TV in that all recently watched / continue watching is a mix of different services that open the correct app when launched. Also has the "Live" tab which shows a combined TV guide of all app's that share it (pluto, tubi, prime, etc) Of course this still locks you into the end app for playback but the concepts are there.