Apple TV prompt requires another Apple device
Having worked at Apple I feel like this is a mortal risk they are taking. The Apple Watch could be the next big thing that replaces the smartphone, except they require an iPhone to use it. So instead of taking a short term hit and moving with the times they greedily hold on to their money maker and risk a competitor bringing out a standalone version and tanking the entire thing. Likewise the Apple TV is a great product and could dominate its category if it didn't require an iPhone.