Warcraft alone I can't imagine shutting down. There is a certain community of people that more or less lives in that parallel universe and it would be pretty disruptive to abandon it. It's like buying access to a virtual bar for $15/mo where you reliably get together with your warcraft nerd birds of a feather.
They're pulling in ludicrous amounts of money, and it's pretty clear from the quality of content over the last 8 years or so that they're not investing more than a tiny fraction of it back into the game
They'll just continue to invest less and less in actual playable desktop games and more and more in toxic mobile dogshit as time goes on
