I appreciate that modern films and high end TV features will be shot at much higher resolution. It's quite evident, even at standard HD resolutions, that House of Cards benefits from much higher production values than most TV content. There is at least one TV series on now that looks like it was shout in wide screen SD, maybe on purpose. I was just pointing out that a lot of material will not suffer any degradation on BD. It's obvious that the opposite is true and I also pointed that out.
The last I heard, some movie theaters were using 1920x1080p for digital projection. I'm sure that has been improved upon for many venues but there's still no guarantee that a movie theater will be any better than a BD. In the end, costs and legacy considerations will guarantee that new, high end technology will be held back for some time.