The problem is that Google and Apple are a duopoly and as such both have outsized market power. And with that outsized power, Apple has regularly abused app bu

The problem is that Google and Apple are a duopoly and as such both have outsized market power. And with that outsized power, Apple has regularly abused app businesses trying to make money in the App Store. From blocking apps that replicate core functionality to the whole IAP shakedown Apple has used their market power in capricious and self-serving ways that have gotten other companies in anti-trust hot water in the past. Having a curated market is fine, but when you use that market curation to undercut sellers in that market to your own benefit you start getting into trouble. Then, when that market controls the lion's share of revenue in that type of market, regulators will eventually start firing up lawsuits.