Even today, I become concerned when someone calls or I get something in the mail that indicates they know a lot about me. Social acceptance is the fourth criteria. Fifth is cost. The January 1994 Media Matters newsletter estimated the cost per hour of using various media. It costs about a penny an hour to listen to the radio.
Complexity is sixth.
The consumer has to be able to recognize and see benefits immediately. The seventh criteria for consumer adoption of interactivity is lifetime value. This is especially important if I am asked upfront to spend several hundred dollars to become interactive. Stop, go, caution, dead end, detour, construction ahead. But there are new options that can be pursued today, without waiting for that superhighway to be built.