That makes sense if someone is willing to pay $100 million for the first copy of the movie.
A more reasonable suggestion would be that once a movie starts to profit, they allow free copies to be distributed.
Even then, there is an issue of making an overall profit as some movies fail, and what the level of 'enough profit'.
I am completely against many of the claims and practises that the *AAs perform (download != sale, poor profits given to recording artists), but they release a product under a set of conditions. If you don't like those conditions, don't get the product. Eventually free market forces will allow the studios that make the best use of the Internet to profit and the rest will catch on. Yes they have a near-monopoly on the industry and they advertise particularly well, but people lived perfectly well before Avatar came out, so if you don't want to pay to see it, you don't have to see it right away. Wait until the movie is showed with advertising for free or don't even see it at all.