Please realize that China destroyed a satellite using a rocket launched from the ground as it passed through its "airspace", 500 miles up. A moonbase would not improve their ability to shoot down satellites, give the distance of 240,000 miles.
I didn't mention anything about a moon base, but okay, I'll play along.
When scientists had the vision of creating satellites in space, people at that time thought these scientists were nuts. It couldn't be done. And even if it were done, what good could it possibly serve humankind?