It would take a massive marketing campaign and a period of free listings but someone would take on Ebay now and win out I believe. I don't think anybody wants to invest that kind of money, especially knowing the direction ebay is going.
Indy's CGC Gradings Master Thread - http://tinyurl.com/p45agbh
Want your Comic Graded or Pressed? - http://tinyurl.com/pn74odq