And what's wrong with that?
Most Set top boxes and IPTV systems are going towards either a thinly scripted STB or an STB based around the browser with the entire UI in the browser.
That is WebOS prime territory by design.
It will be like throwing the proverbial cat in the midst of the proverbial pigeons. Though in this case most of the pigeons stand very little chance of survival as they have had their wings clipped by various ugly hacked DIY frameworks. A dedicated app environment that natively lives in a browser will do a clean sweep here.
What HP needs to do is license it so it becomes the new de-facto STB standard.