It seems as if ABC just isn't going to release Watch ABC for Android TV (they don't even fucking support Marshmallow, so they block installs despite the fact it runs just fine). However there is a Fire TV app, for it, and though I've never tried it myself, has anyone tried to get any Fire TV apps running with success?
So here's the deal: if you pre-purchase the apps online (it will say you dont own any fire devices), then download the APKs, the apps technically work, in that they run, however they get an error when trying to stream anything. Good for games but I haven't gotten the WatchABC, WatchESPN and Showtime Anytime apps to work