This is a question that MANY people have asked me. The US government (and others) tracks satelliltes and hands out orbits for FREE!
But do they hand out all orbits? Or just some?
Just some! So what, who cares if they hide a few, they know where they are and they are doing the right thing!
The Air Force conceals some satellite orbits and then goes off and forgets about them. When they reenter, the normal alerts are not issued.
This is an example of how an archive of orbits can be used to analyze what is going on and alert people to possible danger.