The video game console market is not at all like eBay. About the only similarity is that once you have sold a ton of consoles the game makers come and make a lot of games, which in turn helps you sell a lot of consoles to gamers that want to play all those newly made games. A big difference is that avid gamers demand ever increasing quality games which require new hardware. It's the battle therein over each new generation of consoles where market share is won and lost.
The difference here is nobody is demanding a new console and you the game makers are going to stay right here making games for eBay until a new better console comes along that has just as many game buyers on it as eBay has. Or at least enough to bother trying to make some sales on it. Which to date many have tried and all have failed.
Also I didn't say eBay will never go down the tubes, I said it won't go down the tubes until a credible competitor arises. Which there still isn't.
At this point it looks like we'll be opening up our store beta to more customers in late September. We've received feedback from about 40 of the 200 customers that participated in the first beta and are going to work to incorporate their feedback along with some other additions we wanted to make.