Apart from its classic design, another factor I think which has contributed to its longevity is the utter simplicity of the "Stan Smith" name as well. It rolls off the tongue so easily. So alliterative.
It would've been hard to market the shoe with Smith as the front-man if his name had been, for example, "Stanislas Smitkowski".
WANTED: Prince Classic Graphite 100 (1/4) and Tecnifibre 315 Ltd 16x18 (1/4)