Come on now.
> writing the operating system
Which OS, iOS, that the phone purchaser inherently paid for? Or macOS, that the computer purchaser inherently paid for?
> developer tools
Which you need to purchase a developer license for to be useful.
Apple is adding value, AND double dipping. Most of your examples are things they've already been compensated for.
They invented the app ecosystem, which is far more important than just inventing a phone. Without Apple, the application market would still be controlled by Sprint and AT&T and Verizon.
Not defending Apple or attacking it, just pointing out the facts.
They can keep their 30% cut if they allow me to sideload apps from external sources.
I don't know if you've used an iPhone, but do you really think AT&T's walled garden would have anything approaching the quality of the best apps on the App Store?
Sadly, people have forgotten how much life sucked for mobile developers before the iPhone. Apple's contribution is reflected in various peoples' prejudices and agendas, but not in history books. Only Nixon could go to China, and only Jobs could have stared down AT&T from a position of weakness.
I'm not an Apple partisan, and I'm definitely not going to defend the concept of locking a general-purpose computing platform away from its own users, but I'll always give him credit for that.