Monopoly and popularity
I keep seeing the iPhone’s popularity and sales numbers thrown around as proto-defenses against allegations of flexing monopolistic power in one category to dominate others.
“Popularity” is an argument IN FAVOR of the the government, not a defense. The argument is that the iPhone is very popular and sold a lot, and Apple is using that position of strength to stifle innovation and hamper the growth of competitors in related categories (payments, apps, music services, etc.).
You can disagree with the suit all you want, just know what you’re arguing for and against.
I think this ultimately traces back to a weird implicit belief I’ve been noticing lately, which is like a Constitutional (or god-given) right to a certain business model. If you listen in the news, you can hear it being implied all the time.