StarCraft: Remastered and StarCraft II: Campaign Collection have been added to Xbox Game Pass as of November 5th, 2024. Since the multiplayer for both games has already been free-to-play for several years, this probably isn't that meaningful for the competitive scenes in either game.
Still, even some small percent of campaign players discovering multi-player is something to be welcomed, so this is at least a mildly positive development.