That's what makes me sad about the current Tetris game, on iOS.
One of my favorite games ever, and I'd gladly pay for an ad-free version, but they don't have it. I assume there's much more money to be made with ads, over subscriptions.
Oh, the Rubik's Cube app has both actually - the subscription gets rid of the ads you have to watch to get more solves.
A penetrating observation that feels true. Too bad.
I think there's money to be made with both, but there's more money to be made by not maintaining two separate models, so ads win.