Do you understand the power dynamics of the business you listed in your example. Costco is a worldwide juggernaut and American Express is not the only payment

Do you understand the power dynamics of the business you listed in your example. Costco is a worldwide juggernaut and American Express is not the only payment gateway in business. That is not the case with iOS devices. Apples services are the ONLY OPTION, you either like it or leave. You seem to be having difficulty understanding the anti-competitive argument the trial is addressing.