The only way to do power saving with modern TV's is to use ARC, and ARC support is just not very widespread yet.
Two of the tree devices plugged in to my TV support ARC. Both my Chromecast and my Android box support it. Only my seldom used Blu Ray (I rip my blu rays and toss them on a fileshare for my android box to play) does not support it.
This is exactly it. I find when I negotiate with Chinese companies that they tend to be very accommodating and they try to give me whatever I ask for. If you want a feature, they will add it. In fact, I once had a DSLAM company add protection circuit (protect against DC polarity reversal to avoid fireworks) to their equipment just for me along with some software changes. The trouble happens when you tell them you want it cheap. They will cut every corner and give you the cheapest piece of trash you've ever seen..
Its the same with outsourcing: When you go cheap, you get all of the people who couldn't get jobs elsewhere.
Whenever people agree with me, I always think I must be wrong. - Oscar Wilde