I am no developer of iOS, but I am quite sure that Apple gives this information to developers. I worked in a payment system for years and this kind of information is quite common to share with your API users. I think they're even obligated by law because you can't really have a monetary transfer without sharing more details between both parties involved (yeah, you also have more information about the seller when money is involved).
I mean, I don't see how Apple would share less information with Netflix, them say, Stripe itself. Of course Netflix has some more information about you because you're using their platform to make the payment, however about the payment data itself I would say the information they can get with both Apple or Stripe is similar [1].
[1]: Unless of course Netflix made their own payment system, that also would make sense considering their size. In this case they would have more information about you, like full Credit Card number instead of only the bin number of your Credit Card. However I don't think this would make my point much different.