Which is exactly why blackouts exist. Live tv is pretty much solely about sports and 24 hour news channels now. The big four sports leagues all make billions a year off their TV deals. Giving up blackouts would absolutely hamstring them.
Hard to believe the other leagues will give up blackouts until they are confident they can run their own streaming service and cash in on that micro gambling revenue. Can you imagine how much money the NFL would make if people were gambling $.10-1 on every play?