I doubt a 3DTV will provide a good 3D experience, because of the small screen. I expect good 3D movies to continue to draw masses to the theaters.
Avatar is a good 3D movie because of the subtle effect. It worked well also in live scenes. It seemed to me to herald a new era in moviemaking.
I think 3D TV will do fairly well. But I also think the future is in VR-like 3D glasses, all the effect, none of the size- you should be able to do production on a parity price scale and you have the advantage that everyone in the family needs a pair. I certainly wouldn't put tens of millions, let alone hundreds of millions into 3D without seeing a good lay of the land for smaller projectors and glasses. One to three screens, sure- it's going to demand a price premium, draw people in and all that- you'll ROI that over 3-4 years in most cases.
With live subjects you can't do it well without higher production costs and the economics of movie-making don't really support it on a large scale yet.
While the production houses might want to get rid of actors to increase their profits, I don't think we're near the "most movies should be complete CGI" stage yet.
You're still not following the money. Let's look at IMAX:
A typical IMAX film's production costs fall somewhere in the range of $3 million to $8 million for a 2-D feature, and $8 million to $15 million for 3-D, with 3-D films involving CG running at the high end of the scale.
Here's another thing that I touched on earlier:
The screen size and clarity mean that every frame of an IMAX film must be perfect. "In 35 millimeter, you can use lots of cheats in visual effects -- things like rain and darkness," says Michael Lewis. "In IMAX you see everything, and everything is photo-real. There are 100+ IMAX screens in museums, so things must be as accurate as possible. With a dinosaur, you have to worry about things like nostril slant and tooth decay. When placing a dinosaur on the ground, the eye instantly knows if something is not perfect."
You might want to look at the source material for the two above paragraphs:
http://entertainment.howstuffworks.com/imax3.htm
The generally accepted rule of thumb has been that 75% of Hollywood movies lose money. That's pre-DVD I think, but even if you take it to 60% once again you're not taking the money into account. You want to increase production costs, but go into fewer theaters adn you cna't raise ticket prices to make up the difference- once again, please show me the ROI. "Good 3D movies" may indeed "draw the masses," but so far we're averaging about one "good 3D movie" a year, maybe two- that's not a revenue sustaining model for operations, let alone the sort of capital investment you keep claiming is necessary.
Paul