You can't flood the market with every TV show, every reality show, and dump your library into the market all at one time and not have some kind of game plan in terms of pricing.
To have to introduce a new product at the worst economic time in the last 50 years probably wasn't the greatest thing to have happened.
Studios felt like Blu-ray was going to be the next panacea, and so they dumped the prices (of traditional DVDs) and devalued the product. That's a misreading of consumer behavior as well as a misreading of the economic environment.
The good movies that people want to keep are probably creating their value more than anything else.