Yeah, there are problems with theaters, I'll readily admit, though most of them have to do with other customers, not the theater itself. Also, even 1080i isn't as high a resolution as 35mm film.

At the same time, I can't come up with a good reason for them not to release in multiple avenues at the same time.

At the same time again, though, I do wonder if there's a movie you're interested in seeing while it's being advertised but uninterested in seeing later, if you're not just saving money by not seeing a movie that you really don't want to see.