Typical Tim Cook strategy. I mean, who am I to judge Tim Cook. I assume in-app purchases work similarly to in-game purchases, meaning a very small amount of customers contribute the vast amount to revenue. One reason I believe this is that these apps cost ridiculous amounts of money for what they are. Notes app monthlies, Bunch of face filters for a yearly subscription, and so on. In the short term this increases revenue for devs and Apple. However, I do think that this strategy could backlash for Apple if the app ecosystem (a differentiating factor at some point) becomes less and less attractive. All of my paid apps are Mac exclusive. If they change to subscription then I am out. This also means my lock-in to Mac diminishes.