A little while back, Netflix started putting out some games through its app. No further microtransactions, just a game (I think). It gets some good-hearted efforts like Valiant Hearts: Coming Home and Oxenfree. I feel like the best thing for genuine mobile games could be some kind of App Store that curates just to things like that, and disconnects from the past of cheap crap.
Imagine a popular subscription service like Game Pass tying into well-built story-based games, for instance. I think it could work out well.