L.E. Modesitt libertarian novel? An sf thriller with interesting perspective on privacy, comments by the reviewer over at scifi.com:

Sometime in the 2100s came the Collapse, when America’s ‘Commonocracy’ failed in chaos. Out of those ashes arose a new patchwork nation along what appear to me to be essentially libertarian lines: little government, free rein to businesses known as ‘multis,’ privacy laws that limit media snooping and a requirement that each individual citizen maintain his own security.