It would be cool to have the ability but I don't think it will ever happen. Why would a movie studio stream a video that will be bootlegged a few thousand times on opening night? And we're not talking garbage bootlegs where someone takes a GoPro into the theater, we're talking HD quality. I don't think studios would ever stream unless there is a way to charge for every set of eyes that sees the film. That's nearly impossible so doubtful they'd willingly let people buy the movie on opening night on-Demand and then invite a few dozen friends over to watch it. As for your last question. Even if someone avoids the movie for a week, so long as a person watches it while it's in theaters I doubt the studios care. And lets go a step further. Even if people avoid theaters all together, they'll eventually either rent or buy the movie.