This. I truly do not understand the argument here... that Apple should allow Spotify to utilize the App Store to post billboards for cheaper payment avenues. I genuinely want someone to explain that to me. In my mind, the analogy would be for Walmart to not stock Samsung TVs, but instead have posters pointing to www.samsung.com to buy direct from them. Is that a bad analogy? Again, genuine question.
You say this as if Spotify were asking for posters in the Apple Store or a banner ad on Apple.com.
Apple were telling Spotify that they couldn't even advertise their own promos in their own software.