Because the world we live in right now has never changed and never will?
That assumes the US government or other government agencies as monoliths, and I don’t believe that they are… nor does it take into account all the people on the outside pushing for change. Yes, there is pushback and resistance, but there was at lots of times in our history, and progress WAS made at various points. It’s possible. And that’s just as realistic as the resistance to change. 
