> iOS and Android devices are the only option right now for quite a wide range of things.

That is a stretch and I do not accept this definition. On one hand, we have had MeeGo, Symbian, FirefoxOS, QNX, Windows on Arm, even Ubuntu on Mobile phones. It covers both phone functionality and gaming functionality.

For games, there are game alternatives. You can buy games on non-mobiles extensively.

Furthermore, feature phones are covering functionality necessary to work on both games and application stores (limitations vary on model - even if limited to mobile gaming,There are options for that ).

In this varied complex history, why would I perceive as iOS and Android as the only game in town? They never were.

Note that FirefoxOS allowed the tinkering, which would permit all the functionalities . My point is to revive such mobile OSes instead of having to rely on iOS. If someone wants tinkering, FirefoxOS is a case study.
Or install Ubuntu on a phone/pad.

Covered elsewhere is the fact that web on iOS/Android can perform the equivalent gaming experience. With the current state of WebGL, gaming on web is feasible.

> ou aren't seriously suggesting that Apple only promotes privacy because of their walled garden?!

Having a cut from app revenues will cover the cost for the infrastructure and give financial boost to the mobile division at Apple. If the financial cut is gone, Apple’s middle managers will not be incentivised to maintain the same level anymore. At that point in time, there will be financial cost to the AppStore infrastructure, but limited financial incentive in maintaining the AppStore/other store integrations.

I claim that restrictions on the iOS application stores imposed from court will result in Apple’s incentives changing to limited privacy. In due time, Apple will start sharing private information just like Google is doing, to fill the gap by the lower percentage revenue. Then we all lose.

The wall is useful for me - this is a wall the owner placed himself. Now the only incentives for the owner are inside that wall. The owner being a set of managers (see Innovators Dilemma for reference).

A third point not covered is the cost per application. The original idea is that the cost per app will be lowered, had it not been Apple. But the list price for applications are driven by what the developer can charge, not the developer’s costs. If the optimal list price for an application is 10$, the price will remain 10$ with or without a change in % associated to Apple. Say a widget costs me 1$ to develop. It costs 3$ to market. I know that my target audience pays 10$ for the widget. Say, if the costs is less than 10$ the audience associates it with bad quality, so 10$ is the optimal spot. ) A new marketing strategy comes up and it costs 1$ to market the widget.
What is the price to sell the widget? My target audience associates good quality with 10$ per widget. It costs with 1$ to make the widget, but to serve my audience, what is my incentive to lower the price? I will sell the widget at 10$ at a higher margin of 8$.

I am ready to put good money that Fortnite’s price will increase, at a time in the future when it is all settled to avoid bad PR.