TV isn't going anywhere until the internet becomes completely free and covers the major countries of the world 100%. Until then, millions (probably tens of millions just in the us alone) of people that don't have/can't get/can't afford internet, and millions who have internet still watch tv and probably will continue to do so for a long, long, long time.
Access to television programing is not a right.
Studios will follow whatever model is in their best interest. If they can make more money selling their product to those who can afford then they will. There does come a point when the "millions who can't afford internet" no longer remains a viable market share. And it's closer than you think it is.