The long tail of the Internet theory says there's a market for it, but there are just so many sizes and the initial outlay is so expensive. I don't feel there's a big enough market for me to buy a bunch of TVs, reflashed them to not have adware, and then resell them.
What about an Apple TV-like set top box? Maybe an ASOP based replacement for Android TV ala graphine.
You mean like taking a Chromecast and putting it into "Apps only mode"? :)