Vs simply doing it on my device with one tap? Plus I get to view and manage my subscriptions all in one place?You say, compromises user experience? What User experience are you referring too? The one time setup that you have to do on Netflix's website? One time and only one time? I guess I can understand ones anxiety about having to visit to sign up for service, a little, but this is not a new concept, at all. But what other user experience is compromised? I still don't get that argument. Yes, while convenient to sign up in app, after that, the user experience is identical.
To each their own I guess.
Not to mention that when I subscribe via iTunes, Netflix doesn't get my credit card details. It all stays with Apple. If it's security we are talking about, all other things equal, wouldn't I want as few companies to have access to my card details as possible? If I could just use iTunes and Apple Pay to manage all my payments, I would.
Then there's also the trust in using Apple's built-in payments system over whatever the other companies are going with.
The very reasons that make it compelling for users to sign up via iTunes are precisely the reasons why companies don't want you to do so.