US buys launches at the same rate as everyone else. NASA chipped in a few million to get falcon 9 off the ground, but they haven't been subsidizing for years.
Thats weird because Musk claims to be operating with "federal agency activity" for Space Force in his bid to appeal the decision in California to take away his launch license. The purpose of the planned increase in launches to 50 and 100 in the next two years? To launch the newer version of Starlink and do a small amount of testing on in-space refueling.
Most of the Falcon 9 launches are for Starlink and are paid for by SpaceX themselves. How is that "the government subsidizing them"? If you want to argue that they're using money they got from NASA to fund those launches, is your plumber feeding their family from you subsidizing their life?