Epic already runs a store they don't need the app store to distribute their apps and do payments. They're only required because Apple gives them no other option.
Also, the majority of people do not own their houses, banks do. Try financing a house and then stop servicing your loan. That’s essentially what Epic has done: breached contract.
Epic’s “store” is an app, and evidently they do need Apple to distribute it to Apple devices, unless you can tell me how to install it right now on my device?
> unless you can tell me how to install it right now on my device?
This is the dictionary definition of begging the question. You can't install apps on the iPhone because you can't install apps on the iPhone -- that's not an argument.
Software distribution and installation, historically, not required an "app store". That's a relatively new invention.