Sure it's profitable, but it's also (correctly) seen as a manipulative, and some companies have stopped using those.

As I said Nintendo and Xbox store used to do that, but they transitioned to prices in real money quite some time ago, and if they got a wallet, they let you fill it with the exact amount of what you're buying. Same with PS store, most PC game stores, even freaking playdate catalogue and itch.io where the average payment must be like $3.

I expect that from shitty mobile games, because I know mobile gaming monetization is fucked forever, but I didn't know major publishers still used that garbage unemptiable wallet strategy.