Your Apple hardware is your Costco Membership Card. You aren’t able to buy Sam’s Club products using your Costco membership, and Costco’s under no expectation to make them available to you.
Nonsense. The App Store is the Store. For god's sake, it's literally called a store. This couldn't be clearer.
You don't need to muddy the waters by making a ridiculous analogy that somehow equates a computer to a membership card (of all things!).
The computer is a computer. Full stop. There is a store on the computer. There should be other stores on the computer but they're not allowed because the people that make the computer are partaking in anti-competitive, anti-consumer shenanigans.
But I can buy a fridge at Costco, buy food from Sam's Club, and still store my food in my fridge. I don't have to throw out Costco's fridge in order to buy food elsewhere.
Some things are compatible and some things are not.
Edit: “Compatible” is not about the tech in this case (the binary would theoretically run) but about the terms of your agreement with the manufacturer.
If you buy a Costco fridge and with it a contract to only store Costco-sold food in it, then you have a better analogy. 80% of the world seems to prefer the AnyFood Fridge, and for some reason 20% buy the Costco with the agreement.
Sorry, I don't understand where you're going with this. There's an updated Hey app on the developer's computer which is compatible with my iPhone, but Apple isn't letting me install it.
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Edit response: How many people do you think read the agreement they signed with Apple? How many realize Apple is increasing the price of software by ~30%?
You don't need to muddy the waters by making a ridiculous analogy that somehow equates a computer to a membership card (of all things!).
The computer is a computer. Full stop. There is a store on the computer. There should be other stores on the computer but they're not allowed because the people that make the computer are partaking in anti-competitive, anti-consumer shenanigans.