[Babrbarossa]

Peter Gutman writes a rather scathing review of the costs to the consumer of Content Protection in Vista. He goes into some depth on issues such as:

Disabling of Functionality
Decreased Playback Quality
Elimination of Open-source Hardware Support
Elimination of Unified Drivers
Problems with Drivers
Denial-of-Service via Driver/Device Revocation
Decreased System Reliability
Increased Hardware Costs
Increased Cost due to Requirement to License Unnecessary Third-party IP
Unnecessary CPU Resource Consumption
Unnecessary Device Resource Consumption

Read the article here