People here today who think they can just setup their products inside a Wal-Mart and not expect to pay a fee of any kind while Wal-mart has massive overheard and billions of customers.
Developers are not different from anyone else. They don't get 100% profit while everyone else let's them live rent-free with a massive base of potential customers.
Let me rephrase that for you. A bunch of stupid people around here who think when they buy an AppleTV from Walmart, go home, and subscribe to AppleTV+ that Walmart must be entitled to 30% of the proceeds because they initiated the sale with the customer, while providing none of the service or content creation/distribution that the recurring subscription fee covers.