Preorders for game servers do not make sense, as the dedicated server can't be tested before release, making GSPs unable to tell if they are even able to run it. They also don't make sense because you'll be able to get a server as soon as we offer them anyhow, through our website. We have no danger of running out of stock, as a store would
I remember one previous game that our competitors offered preorders for (I believe it may have been Crysis) and it worked out very poorly for them due to bugs in the dedicated server program. These bugs forced some workarounds and a wait on a patch, and in the meantime their preorder customers were understandably very annoyed by the multiple-day delay. In the end, I actually found the workarounds sooner and had test servers online before they were able to get their preordered ones up. If the dedicated server had turned out to be a total bust, their customers would have needed their money back, etc -- a customer service nightmare.