Engineering principles which served the Internet well (such as decentralization) also
made it difficult for governments to regulate.
In the CDA hearings, the DoJ certainly tried strategy #1 with the argument (based on
Dr. Olsen of BYU) that IPV6 would support an adult/minor tag in each datagram, but failed.
PICS, based on principles of decentralization and user control, was seen as a better
alternative
However, now there is fear that PICS builds censorship into the Net.