True, but customers push to pay with Amex because they want the air miles so they can fly business class at the merchants expense.
Discussion
I guess, you can either accept the defeat, pay your unfair share and move on. Or push also to a fairer payment method, using the tools you can.
Nothing is free.
Good things are especially expensive.
I spent many weeks convincing my wife to stop using her Amex to collect air miles.
I had to promise to buy a private jet come the next halving as compensation 😂