That's not an alternative.There are plenty of alternatives: the iPhone only has about 20% of the smartphone market! If you don't like the Apple store, choose Android, Chrome OS, Windows, Linux... or run web-based apps on your iDevice. Most "essential" apps are available for at least Android as well as iOS.
You can't use a historical decision and claim that as defense. Like "well, maybe you shouldn't move to Florida if you didn't like hurricanes.... you had a choice!"
When you live in the Apple ecosystem you have no choice. Apple wants to have a dominant position in the market, and you can't say once Apple has won that position, that the Apple app store is anything fair. It's not. And that's what you have here. There is no easy egress, there is no choice once you're in. And if you take this to its extreme you can easily see that. That's monopolistic behavior, which does not require a monopoly position.
Edit: I still stand behind those other options have choices once you're on those platforms. Apple is the only platform that - once you're on that platform - locks you in. Web-based apps? Don't make me laugh. That's why all the engines are Safari and that particular avenue has been tightened so much as to be pointless. It's not like you're going to see Candy Crush as a web app either.