Thank you for engaging, and I hope that my previous comment wasn't too harsh. I get rather frustrated at the "matter of opinion" statement being used as if it were a conclusion, rather than being used to guide discussions.
Regarding the gasoline/automobile being "obviously two distinct markets" and computing software/hardware being "not obviously distinct", I'd say that's a description of how the markets current are, and not a argument for how they ought to be. I intentionally selected an analogy where two complementary good (gasoline/automobiles) are treated as separate markets, to state that goods being complementary, just as computing hardware/software are complementary, does not mean that they are the same market.
> Consider if 50%+ of people moving from horse and buggy to automobiles picked Ford
Looking it up, Ford did have 56% of US automobile market share in 1920 [0]. Not really relevant to either of our arguments, but was interesting to find.
> and in order to support this new market creation Ford had to invest billions to create gas stations all over the country.
I tried to find history of gas stations, to see what historic parallels could be drawn, but it looks like gasoline was either sold at general stores or hardware stores, with dedicated gas stations being either owned independently or by oil companies, and were started in response to the rise in automobile ownership [1]. That is, the existing infrastructure was used for the automobile.
I'd say this is a pretty good parallel for Apple's App Store. The existing infrastructure for software deployment, the internet, was and is the primary method by which software is distributed to iOS. This infrastructure predates Apple, and is a far larger part of the software deployment. Apple's primary role is not one of enabling software deployment (i.e. enabling deployment where it would otherwise be impossible), but one of restricting software deployment (i.e. preventing software deployment where it would otherwise be possible). That strikes me as entirely undeserving of an extra cut of payments.
Another potential analogy would be in vehicle repairs. Your manufacturer warranty is valid, even if the car is serviced by a mechanic not employed by the manufacturer. This required legal battles to resolve, and established that even closely tied markets such as car sales and car repairs should be considered as separate markets.
[0] https://www.entrepreneur.com/growing-a-business/how-ford-cre...
[1] https://www.saferack.com/the-first-gas-station/