> It was a very crappy experience to not be able to remark on a single thing to each other.

That was caused by your baby, not by the devices. 2 people in a small apartment together with their own devices watching what appears to them to be a movie-sized screen would definitely be something many people would like. No big device on the wall. No shaking the people in the apartment next door with your sub-woofer. And you can still comment to each other all you want. (Obviously the price will need to come down for that to be common.)