Apple can argue its 30% surcharge protects consumers from their payment information being tied to each individual product, making canceling easier and buying things safer.
If I wanted a different choice I'd buy a different brand of phone.
Also, many can dislike this issue but still not buy an Android. It isn’t like this is the only differentiator.
An oligopoly is an oligopoly. Would be redundant to bring in how this one has mediocre products now.