alt Hacker Newswhos going to buy one? You cant trust them not to kill it within a few years and cease all software updates AND make it impossible to install a different OS to keep it going. Until they stop being dicks about what you can do with the hardware you own it's a non starter.
Apple itself was a major user of Xserve, Apples needs for cloud compute are massive and growing, and Apple could probably rent Xserve as a cloud to justify the cost and sell it to privacy focused consumers and businesses.