Dictatorship is a fine concept, a legit one as well. Yet, I believe that the one who instigated the coup should bare some responsibilities in case his campaign fails. Also, those who donate the greatest amount of cash and those who make the greatest amount of damage to his cause should be held responsible and get some kind of punishment.
50 percent of income decrease for 30 days, for instance, 50 percent of asset seizure or a 15 days ban should be appropriate fine for a failed attempt do snap the power out of legally elected officials and government.
Plus, I believe that a person who didn't own a citizenship of a certain country for at least 30 days should not be able to start a revolution and "run" for a dictator.