Free market works on freedom of information and informed choice. If you entered into a contract because I mislead you, thats fraud. Sensorship is a form of market manipulation and apple is ACTIVELY SENSORING this information: https://youtu.be/jdEdGPnaDRY

Also margin is the wrong term - these are transaction fees charged by the platform.

The best comparison is Airlines and airport - every time i buy a ticket, i know how much money actually goes to the airline.