If WatchESPN would come to Android TV, I would never turn on my Roku again.
Google is smoking them with smart TV OS right now, I think Roku has about 2 low end manufacturers on board compared to Google with Sony, Vizio, Sharp, TCL, and more.
Roku, by contrast, can allow marketers to target specific demographics and produce ads that are unskippable and interactive.
Roku can't die fast enough, IMO
Roku is missing pure casting and Kodi
Like it or not, it is an old (partially abandoned) platform now