I wasn't trying to compare Google directly to Gamestop. I realize they aren't the same, but they both probably went through significant growth periods where people were screaming "The PE is too high compared to its peers." Google today has no peers. I believe GME is the video game retailer that will have no peers in the future in its industry.
Also, GME will not buy back just any old used game. If they buy an older game, it would be for a $1 or something and then sell it for $10-15. They have a buy-back system where they only buy back games that still have a market. This company isn't stupid.