The battle for privacy was lost during the last decade - as in "we lost the war".
http://media.ccc.de/browse/congress/2005/22C3-920-en-we_lost...
The best we can hope for in future is a transparent or sousveillance society where an informational balance of power is maintained. Currently the main bottleneck is ISPs, and these are points of weakness where top-down control can be introduced to a greater or lesser extent.