Quote from Eventide Sojourner »The end of paper Magic tournaments is nigh. All the "pro" events and qualifiers will be through Arena starting in 2020. Profit margins are higher, and there's no need for judges or TOs, or to scrounge enough physical product on hand to supply players and have prize support.
I would also not be surprised if the announcement stated that "Throne of Eldraine" will be the last paper Magic product.
If they want to kill the game, sure.
The pro circuit is ill-defined currently, and moving to online only, when a mobile version of Arena doesn't even seem to be on the docket, would be a stupid move.