Take a look at the First4Internet site ...
These are the guys who built the quality rootkit drm package for Sony. Of course Sony will try to point fingers in the end, but they are ultimately responsible.
It is frightening when a consumer company decides that distrusting its customers is the best policy. Boycotting Sony completely seems to be the best course of action.
If you want to write to Sony, here are a few addresses
Sir Howard Stringer, Chairman & CEO
Sony Corporation of America
550 Madison Avenue
New York, NY 10022
Ryoji Chubachi, President & CEO
Sony Electronics, Inc.
16450 West Bernardo Drive
San Diego, CA 92127
I did this and got a form letter thanking me for my interest in Sony (Stringer) and a HDTV brochure (Chubachi). Your mileage may vary.