The Onion Router was invented by a branch of the US government and is heavily supported by the German government (they run a LOT of exit nodes).

This is because TOR allows their operatives to do things that would otherwise be illegal in foreign countries.

Also, controlling the exit nodes means you might not know who is doing what, but you still get a pretty good idea of what’s happening, just not who is doing it - so it’s a great source of intel.