has a government ever been interested in GPU owners?
all that has happened to ASIC buyers, search the forum for some really scary stories....one of the biggest weaknesses of coins that depend on custom hardware
while the price of a coin can be greatly diminished by hostile action, the mining itself can not be stopped, if the hardware is generic. asics on the other hand can be blocked easily; if country X wants to block Asics from entering that is easily done at the border: block a few companies, block certain types of devices, done.
blocking cpu's or gpu's would not be feasible
ASICS however make the network broader and more resilient - if it wasn't for the constant threat from governments, banks, exchanges and so on.
