Not just a fad
Although the Wii was an instant smash hit, many analysts wondered whether or not its appeal would hold up. That speculation began to subside when retailers were still having trouble keeping the Wii in stock more than a year after it was introduced. In its first 18 months, Nintendo moved more than 24 million Wii's. Even though the Xbox 360 had been on the market a full year longer, it had sold only 19 million units. And Sony, once the undisputed industry champ, placed only 12 million PS3s.