Unless you haven't noticed, rscott like to argue the toss.
I've just been on the BT forum, and rscott was whining his same hate for Windows Store Apps.
For those that care, BT now have a Universal App for its TV service.
Amazon Prime does have a Windows 10 phone app, although not yet on PC.
The BT app was made by a single developer (one by his own admission isn't the hottest XAML/C# coder) and yet he managed it. The only reason Sky doesn't have an app, is that they simple don't want to make it, not that they can't.