You're moving goalposts and ignoring what I wrote. An Apple TV box is not expensive and you can use even cheaper streaming devices to buy and watch instead.
I buy/rent films on my phone, and play them through the Apple TV Roku app. (Roku sucks for its own reasons, but most TV platforms have Apple TV apps.)
I buy/rent films on my phone, and play them through the Apple TV Roku app. (Roku sucks for its own reasons, but most TV platforms have Apple TV apps.)