I don't need to, that's what I was already responding to. Please re-read my comment.

I really didn't think it necessary to reply to your sentence that "If that is not provided, but the customers don't trust other payment methods, the app won't make money" -- because it's so clearly relying on a false premise.

But since you need it further explained: trust in payment methods isn't binary. I prefer Apple payments but still use my credit card for everything else where it isn't available. If people can't use a better payment option, they'll fall back to a worse one. They usually won't just forego using the app entirely. Just look at the success of Adobe Creative Cloud despite its horrendous billing practices.

Again, that's what's wrong with your argument around choice. More choice leads to worse outcomes when you allow the best choice to be removed.