THE SKY IS FALLING! THE SKY IS FALLING!
Want to know why retailers are closing? Guess who imported everything for them in violation of his issued licenses and permits.
This boils down to a simple case of someone being given certain guidelines to follow and they flouted them. Airsoft is not banned, customs is not shutting down multiple retailers. They don't have any stuff to sell you, THAT'S why they are closing the doors.