Game Crazy, a now-defunct minor player in the US games retail space, operated for around a decade, kicking off in 1999 and winding down in 2010. Those involved with the chain, a subsidiary of Movie Gallery, will tell you it's because increased competition squeezed it out of the market.
They're wrong. It's because a generation of store clerks were shown this training video, created in 2003.
If you're watching from the start, and are thinking "it's not that bad", you haven't got to Zelda Scott at 1:14 yet.