Except for 3D. But how much of an effect is 3D having? Most movies aren't 3D.
I'll say this: I went to see Super 8 at an old 60's-70's style theater in the far-out suburbs, one almost identical to the ones I saw movies in when I was a kid. No stadium seating. Simple seats. No cupholders. Massive screen. Minimal concessions. Maybe it was just the movie I was seeing --- like how watching South Park on your computer enhances the experience --- but it was awesome.
Ultimately, my bet is that the problem with theaters is simple: for the core market (the family of four that wants blockbuster mainstream product), the substitutes are just too good now. Mainstream consumers have, relative to 1995, spectacular home theater setups, and diverse options for feeding content to them. Is it any wonder theaters suffer?