That's the big change, the lack of obligation. If SpaceX is going to be fulfilling government contracts, on government facilities/ranges, using countless government employees, resulting footage should be free.
It hasn't happened yet, but with human spaceflight nearing we may see SpaceX drafting license deals in a manner NASA never contemplated.
NASA's copyright policy is the exception, not the rule.
NASA's copyright policy is US government wide, it's just that most of the rest of the government actively dodges it by hiring photographers and letting them own the copyrights.
Id be critical of any privatization of something that was once public domain, specifically spacelaunch footage.
SpaceX footage was never public domain. It’s completely different camera systems, etc. There is no regression here in rights because they are completely different things.
It sounds like your problem is with the government not putting speculations in the launch contracts to demand footage be released to public domain. That’s the real issue and that’s where it should be fixed.