Will your trivial custom payment system come with counter-intuitive modal popups? Unclear subscription/unsubscription terms? Inaccessible or hostile refund or return policies?
I don't want to prematurely insinuate that you or other's solutions would all have such characteristics but as a consumer I don't care how developers get paid and I enjoy the benefits of Apple's integrated UX around iOS payments and subscriptions.
But I am also a developer and enjoy benefits of open-ness and choice in my work as well so I struggle with my opinions on this issue.
I don't want to prematurely insinuate that you or other's solutions would all have such characteristics but as a consumer I don't care how developers get paid and I enjoy the benefits of Apple's integrated UX around iOS payments and subscriptions.
But I am also a developer and enjoy benefits of open-ness and choice in my work as well so I struggle with my opinions on this issue.