Ok I know this question has been asked before maybe a 1000 times, but I haven't still found a definite answer so here goes:
There's an app for the Amazon Fire TV stick that's called AirReceiver (I saw it work in this YouTube video https://youtu.be/aURioeXxZU8 ) that mimics the native Apple TV's AirPlay feature perfectly.
I know that Apple doesn't allow native AirPlay support on other streaming devices, but there's always third party applications to the rescue!
So my question is: Why isn't there a similar application for Roku?
I know there aren't any apps because I've searched, I'm asking why? Is it a hardware limitation, or legal, or what?