A 65 acre campus that generates hot air and sells other people's stuff. Hey, whatever floats your boat.
Anyway, yes, it is unfortunate that a big heat generation facility like eBay isn't located in a big city somewhere to put all that generated heat to good use. However, big cities have big business tax bites, big property tax bites and employees in cities usually get higher wages. Being out in the country eBay is doing the American dream in a cost effective way.
Where I work, we make servers go five to seven years, not just two. We can't afford to be on the cutting edge of technology, since the edge seems to leap forward at such a pace that county budgets could never keep up. We'll let eBay and their staff test out the cutting edge stuff and MAYBE in 2015 we'll be doing what eBay does now. ;-)