And the USA is going to totally destroy its economy in order to kill US use of bitcoins? That's called cutting off your nose to spite your face.
Imagine that u r a president. Bitcoin gives ppl a tool to get rid of u. On the other hand u have Internet Switch Kill. Switch it on and u ruin economy of ur country. But u still will be a president. Don't switch it and u'll become an ordinary person without usefull skills. What will u choose?
Also, even if land based connections are fucked, we still have satellites
"The Fork: American blockchain VS European blockchain" - in all movie theaters of your town!