The Internet killed the music industry because the music industry was literally in the disc-and-tape business. They were all about distribution, only doing production as necessary to ensure there was something to distribute. The only chance the RIAA had was to whine and fight because there was no place for them in post-CD world.
Movies, on the other hand, are actually in the content production industry. The Internet and desktop software make movie production and distribution cheaper, but not by that much. It still takes thousands of people and millions to hundreds of millions of dollars to make a movie. This isn't likely to change in the next few decades. This incredible cost of production and large fixed overhead, combined with vast demand for the product, mean there will always be opportunities for movie producers to make money, even if the entire way we distribute and consume movies is turned on its head.
As for the emotional impact disruption: most of the disruption is happening on the financial side; the alleged reason these people are trusted with billions of dollars is because they can put on their big boy pants and adapt to changing business circumstances, because business circumstances are always changing. For the people in the trenches, stuff isn't changing that much. The percentage of revenue from PPV vs DVD sales vs Licensing only matters to a grip if they have a really bizarre contract.