Thursday afternoon, Microsoft's 
online store displayed "Out of stock" and refused to accept orders for that 
configuration. The message remained in place Friday. On Saturday, the website 
said you can order now for shipment by March 1.
The 
new shortage makes Microsoft's blog post of Feb. 15 seem prescient. Then, as the 
company announced it would start taking orders for the 128GB Surface Pro, it 
warned customers that, "Once inventory is depleted, the system will show as 'out 
of stock' until new inventory is available to ship."
That's 
exactly what it did.
The 
Surface Pro has had an up-down-up-down history, brief as it's been.
Microsoft 
started selling the 128GB Surface Pro on Feb. 9 for $999, but within 
hours supplies dried up. Customers were furious, frustrated at coming up empty 
in their searches for the tablet, and took it out on Microsoft in scathing 
comments on the company's own blog and others.
A 
week ago, Microsoft reopened online ordering, telling customers that their 
tablet would ship on or before March 1. Rather than simply extend that shipping 
date into the future as supplied dwindled -- a practice most other vendors, 
including Apple, take when orders exceed demand -- Microsoft shut down orders 
completely.
The 
$899 64GB Surface Pro, which has been derided by some for having only about 30GB 
of storage space for customer content and apps, has remained available 
throughout the sell-outs of its sibling.
The 
on-again, off-again 128GB Surface Pro availability shows that Microsoft 
seriously underestimated demand for the tablet-becomes-an-ultrabook, said Ezra 
Gottheil, an analyst with Technology Business Research.
"It's 
beginning to look like this isn't a problem with building up enough inventory 
for the launch, but that Microsoft underestimated demand," said Gottheil, 
countering those who two weeks ago accused Microsoft of a marketing gimmick by 
purposefully holding back the tablet.
Instead, 
Gottheil traced the supply snafu to Microsoft's change in Surface strategy last 
year.
"Surface 
was first to be an inspiration to the OEMs, a marketing device to increase 
awareness of Windows 8, a challenge to the OEMs to come up with better designs," 
said Gottheil, echoing pundits' takes of mid-2012 when Microsoft surprised the 
technology industry with tablets of its own design that it would sell 
itself.
"That 
made perfect sense then, and didn't bother OEMs too much," Gottheil continued. 
"I'd also argue that Microsoft succeeded at that. It has been able to increase 
awareness of Windows tablets, and been able to define Windows 8 tablets as a 
different breed of cat.
"But 
somewhere along the line, their emphasis shifted," Gottheil said, of Microsoft. 
"They started saying, 'We're a device company,' they broadened distribution, 
they launched a large marketing campaign to make the Surface the thing you want 
to buy."
Microsoft 
CEO Steve Ballmer's contention in his annual letter to shareholders last October 
that, "We see ourselves as a devices and services company," was the first public 
pronouncement of the shift in strategy.
In 
Gottheil's scenario, Microsoft's expectations for the Surface under that first 
strategy were necessarily low, and it placed orders accordingly. "They scoped 
out much lower component orders," Gottheil speculated, of Microsoft's doings 
last year.
The 
current shortages, then, are a result of plotting out one path, then changing 
directions after the initial ramp-up for the tablet was set in stone with 
suppliers.
And 
it may take some time for Microsoft to balance supply and demand, Gottheil 
warned. Touchscreens are tight for most device makers -- Apple seems to be one 
of the few OEMs to be immune, likely because of its longer history sourcing 
components for its iPad line -- and it's possible Microsoft will have trouble 
upping production of the Surface because of that.
"Microsoft 
just didn't get a chair at the touchscreen table early enough," said 
Gottheil.
Analysts 
and vendors expect that touchscreen inventories will climb in the second half of 
this year as more production comes on line to meet demand by traditional PC 
notebook makers, part of which was sparked by Windows 8, part, said Gottheil, 
due to an increasing familiarity with touch on tablets and an expectation that 
the same functionality should be on laptops.
"I 
don't think that many [vendors] expected people to want touchscreens on 
old-style PCs," said Gottheil.
 

