I don't know. Intel seems to be surprisingly weak in marketing their
whatchamacallit 64bit extensions - are they still trying to push IA64
for the server market?
Definitely! At least publicly Intel is STRONGLY saying that IA64 is
the one true path for the future, customers be damned!
And is MS part of that, by providing Windows
64 for IA64, but not AMD64?
I doubt it. I think you hit on the correct answer a bit further
along...
What kind of stranglehold could Intel have over Microsoft anyway? Did
they promise to stop supporting Linux or something? I can't really
find a reasonable conspiracy theory here.
I don't think any conspiracy theory is needed...
So I guess the explanation is the one given by Homer Simpson: "It's
because they're stupid, that's why. That's why everybody does everything."
Now you've got it!
Actually it all seems to tie back in to the fact that MS decided to
push all their future OSes back until they get WinXP SP2 out, and that
seems to be taking forever! Each time SP2 gets pushed back everything
else gets pushed back behind it.
PS: Any recent figures for "datacenter" IA64 vs Opteron servers, and the
percentage running Windows 64?
I suspect that the figures are probably measured in single-digit units
for both, so they probably aren't all that meaningful. IA64 seems to
be either small (1-4P servers) or big iron from HP (running HP-UX or
Linux) or SGI (running Linux). Opterons, on the other hand, are all
1-4P servers and therefore wouldn't really fall into the "datacenter"
category.. at least assuming you define "datacenter" in a similar way
to how MS defines it.