I believe that prudent compartmentalization is the best way to control tracking and reclaim privacy. Each compartment comprises interests, relationships and activities that you want observers to track and interrelate. For compartments where privacy is essential, it's best to use pseudonyms, and to avoid cross-linking with public compartments.
Compartments are isolated in VMs, with separate network connectivity using nested chains of VPNs, JonDonym and Tor. Particularly sensitive compartments are isolated in separate computers. It's prudent to avoid cross-compartment sharing of USB drives.
This is incredibly hard to do well and takes a great deal of discipline. Unless you're a Belgacom or Gemalto sysadmin, the consequences of cross-contamination aren't grave. It's easy enough to burn an identity and create a new one.
Each compartment comprises interests, relationships and activities that you want observers to track and interrelate.
Excellent! There are a lot of historical precedents for technology enabling intermediation! Such intermediation comes with power, which does need to be tempered with some regulation. (The minimum possible, due to regulatory capture, of course.)
Compartments are isolated in VMs, with separate network connectivity using nested chains of VPNs, JonDonym and Tor. Particularly sensitive compartments are isolated in separate computers. It's prudent to avoid cross-compartment sharing of USB drives.