First of all, discussing licencing is against rules:
viewtopic.php?f=4&t=232
3) Some topics are off-limits. Don't discuss any of this, even to admonish the user that starts it:
Exiled Kingdoms licensing policy / pricing / begging for discounts or codes.
That's why I'm locking this thread.
But, there's obviously one thing that begs explanation:
EK isn't selled by David directly, he uses infrastructure by different companies. Like Google (Android), Apple (iOS) and Valve (PC). Each of these companies has its own set of rules, policies, prices and don't communicate and exchange information between each other.
In practice, if you want to use any product sold by each of this company, not just EK, you need to purchase it separately.
That is how this works.
I guess if you someday made your own company, you would do the same thing for products you would sell.