This is from wikipedia: “In law, a monopoly is a business entity that has significant market power, that is, the power to charge overly high prices, which is associated with a decrease in social surplus.” As a side note, I find it really distasteful when people say, “It is not a monopoly,” because it adds nothing to the conversation, and is almost always wrong.
And tossing a Wikipedia quote at me doesn’t make what I said incorrect, either. Google allows (and has) numerous third-party app stores on their devices, some of which are completely free. The app store that Google themselves operate also has lower fees and looser restrictions than Apple’s own store. Android is also an open-source platform that allows sideloading of thirdparty applications. Most device manufacturers heavily modify it to suit their needs.
Anecdotally: I have used Android phones for most of my smartphone-owning life and have recently been using iPhones for the past few years. Apple’s app situation is an absolute joke. It is so incredibly expensive and locked down that the app store is almost completely useless unless you are ok with paying monthly sub fees for even the most basic of apps. Apple is literally fighting a court battle with the EU right now over their app store in which the court branded it as a monopolized service.