The biggest reason I haven't jumped ship to Android over the years is that the App Store has always been inherently curated, and typically more secure than the Android store.

The iPhone has been pretty good for security / privacy as well - I remember an article that made the front page here about how an accidental usage of the phone's GPS was still stopped when not allowed in the user's settings, and still triggered the location use icon in the status bar.

Much like how Standard Oil actually lowered oil prices while it dominated the market -- sometimes, a monopoly is benign or even benevolent towards consumers. Meanwhile Amazon is an example of a more predatory organization, as evidenced by some of Bezos's responses in the recent congressional hearing.

Monopolies like Amazon should be torn down for the consumer. Monopolies like Apple should only be torn down if they are using their market dominance to extinguish competition that would otherwise force them to improve.