I daresay a lot of people here owe their careers to the actual (and aspirational, especially considering the site sponsor) gatekeepers collecting rent, too.
You could almost argue that it's worth 30% for the initial discovery in their app store (meh), but I just don't get how anyone could think it's fair for Apple to take 30% of a subscription, when developers don't have a choice but to use the platform.
What I mean is that this is not something exceptional, literally every single billion dollar tech corp operates this way, the only way you accumulate insane amounts of profit is by cynically examining every possible angle to extract more revenue from the business.
Sort of, it would be just business if developers were allowed to release and install apps from somewhere else other than the App Store, and if there were allowed to use any type of payment system they wanted to, or even the mere fact if there were allowed to tell users to go somewhere else besides Apples IAP system to make a payment. It's monopolistic and anti-capitalist if you compound all the facts together.
"Competitive capitalism" is the one which is generally best for consumers, as businesses must compete, which drives down their margins (thus passing savings to consumers).
"Free market capitalism" is effectively hands off. Monopolies can form, and without any regulation it can become quite bad for consumers. Typically monopolies rarely form, but obviously in areas like utilities it happens quite naturally.
Most people strive for competitive capitalism, when used colloquially, IMO. In the general case they are one in the same, but owning whole platforms that are broadly used is new territory, where it bleeds into anti-consumer impact IMO
Edit: To clarify further, I'm not saying "the status quo is fine", I would be in favor of legislation that would force Apple and Google to allow alternative app stores as first class citizens, but in the world we live in, I don't think trying to extract profit out of the platform you built is that crazy, this is what every big corp does.