Back in the 70s there were a lot of private detective shows, like Mannix, Cannon, Barnaby Jones, Rockford Files. Now, all the crime shows seem to be about police or other gov't agents, such as CSI or Law & Order. Another difference is that the PI shows were mostly focused on one lead character, while the cop shows tend to be more ensembles where the entire cast can be changed over time. The closest thing currently to a PI show I can think of is Burn Notice, and even that guy is an ex-gov't agent. What happened to the PI genre?