Since Apple permits OSX Server Edition to run in a Virtual Environment, there isn't much impact for large users of Xserve 1U's.
Apple only allows virtualising OSX on Apple's own hardware.
Which comes pretty close to defeating the purpose completely, especially now there won't be any appropriate hardware on the market to do it on.
In short, your "solution" isn't possible.
I never knew BSD sucked in a server environment.
Despite what a lot of people like to fantasise about, OSX and "BSD" (whichever one you might mean) are not identical, or even significantly similar.
Its almost like its not BSD, its OS X and just happens to share some components. I mean Windows XP and Server 2008 R2 are like the same thing right? OS X server shared a lot with bsd and unix but it does have its own quirks.
XP and Server 2008R2 have vastly more in common than OSX and any "BSD".
HP and Dell don't have any official roadmaps [...]
Absolutely they do. I get a presentation twice a year laying it out from Dell, HP, IBM and Cisco.
Included (at a minimum) is timelines for new models (including important capabilities like # of PCIe slots, RAM capacity, # of drives, CPU options, etc) model revisions/updates (changing of CPUs, RAM types, etc) and EOLs (it's typical to get a solid 6-12 months warning when that's going to happen so "last-minute" purchases can be easily rolled into budgets and project plans).
Incidentally, this covers laptops, desktops and servers (and we aren't even close to a large customer - only 100-odd physical boxes and a four hundred or so employees). It's generally NDAed, but you can find nearly all the information publicly within a few months anyway.
You're not an IT Admin are you? This move is a huge loss in credibility for Apple. Oh, and BTW, the XServe had the best price point in the industry for Xeon 1U servers.
No they didn't, except maybe for the first month or two after a hardware update (since other vendors drop prices as a product ages and Apple does not). A similarly configured Xserve costs anything from about one to several thousand dollars more than a similarly configured Dell R610 (or PE1950 or 1850 if going back further), and still only has a 1-year NBD warranty to boot. This has been true since they were first introduced.
There's never been any compelling reason to buy an Xserve unless you needed it for a very specific purpose - ie: you needed OS X server or had one of the handful of corner cases where the G5 was a significantly faster CPU.