What if they move house? what if its a big house? or several flats? an internet cafe? a business? a university?
i) The government throws its hands in the air and gives up.
ii) The government cuts off the entire building/complex.
iii) The government cuts off people entirely at random.
Knowing the way most governments tend to work, my money is on number 3, with number 2 coming in a distant second.