the spin of the earth has very little to do with things above it, but there is inertia, and so things that leave the earth have that initial velocity. think about smoke from a match, it is going the same speed as the surface already, what would push on it to make it go synchronous with the sun? nothing, the atmosphere is also geosynchronous. go up a little bit, same thing, go up more same thing, eventually there is vacuum and nothing to change the velocity except gravity or something like a thruster.