Do they operate the same way?
I think the comparison begins to fail with in-app purchases and subscriptions.
Take Netflix: once their app has been downloaded to a customer's device, are Netflix using Apple's infrastructure in providing video streaming to that device? Hardly. They do their own in-house production, have their own media deals, use their own content delivery networks. The whole service is basically provided from Netflix directly to the customer's device, without using Apple's infrastructure
Take a ****** MMORPG game downloadable from the App Store: Does its developer or publisher use Apple's infrastructure to deliver the virtual add-ons, gold coins, in-game weapons and equipment that I've purchased as an in-game purchase? No they don't. Well, maybe they do - only forced their in-app purchase system on developers and consumers and don't allow a choice of payment method. But everything else is handled in-app or on the developer's game servers.
In that sense, Apple isn't a grocery store. Aren't they, with their app store, rather operating
a business fair or trade show, merely introducing exhibitors/suppliers and buyers/customers to each other?
Similarly, they're charging an amount for a place on their premises. And I wouldn't be surprised if they take a cut of on-premises transactions/purchases.
Enforcing in-app purchasing is rather similar saying:
"I'll take a cut out of every transaction you're ever going to make with that customer you acquired on our show - forever."
Let's say I go and visit that business fair and encounter an apple farmer that let's me taste one apple from his latest harvest. And it's like the best, most delicious Apple I've ever tasted. I instantly buy a basket of them. Why shouldn't the fair organiser take a cut?
Now, the basket full of Apples will eventually run out, and ask the farmer: "Can you deliver more apples to my straight to my door later?" and we agree on subsequent deliveries directly from the farmer to my door. Should the fair organiser force us to use their own payment system and take a generous cut of any future such purchases?
Why not? Well, surely neither do I have to visit that particular fair to taste and buy agricultural product nor does the producer
have to offer there.
But then, how many suitable (and relevant) such marketplaces are there for business introduction that we could go to?
How many grocery stores are there,
what's the competition between grocery stores like?
Seems
pretty intense to me. How does that compare to mobile app marketplaces?