100%. This doesn't deserve a fine. This deserves Apple to be given an ultimatum about their mob boss behavior with mobile.
Apple and Google quickly built up their duopoly such that everyone doing anything with mobile phones has to pay them a tax. You can't even deploy your own apps at your own cadence, without strict review, using your own technology. You have to jump through unplanned upgrade cycles, you're forced to use their payment rails and signup flows (and don't get to know your customer or get them to use your website). You pay the taxes on everything. And even then, they let your competitors advertise against your name or trademark.
This is rotten to the core.
Neither Google nor Apple should have an app store. Apps should be web installs. The only reason things work the way they do is so that Apple and Google can tax and exert control. A permissions system, signature scans, and heuristics are all that are needed to keep web installs safe - and all of those pieces are already in place. There's no technical or safety limitation, Apple and Google just want to dominate.
These two companies were innovative 20 years ago, but their lead then doesn't entitle them to keep owning the majority of most people's computing surface area for the rest of time. They have to give up the reigns. There are still billions of dollars for them to make on mobile, even if regulators tell them to stop treating developers as serfs and locking them in cages.
No. More. App. Stores.
Regulate big tech's hold over mobile, web, search, and advertising.