I would say one time supply of cheap(!) video game equipment is far easier to finance and organize than a reliable distribution of food and electricity for almost 25M people, so i doubt that argument. And I would be anything but surprised if only 1 million or less people would have access to those machines, but my guess would be that a political chance depends more on (semi)-privileged people like those in Pyongyang than on the population of the country side which has even less possibilities of resistance and reform.