Walk into a Apple Store today and ask how many Retina Macbook Pros they have. They will probably tell you 0 or a few. Tell them you are a business customer and you will receive a email from a Business Sales Advisor within an hour or so who will tell you how many they really have in stock. Seriously.
I am sure the general stock situation is improving but they DO give preference to Business Customers.
Keep in mind business customers are paying the full price. No student discount, no government discount. They are the most profitable customers. Apple treats its most profitable customers best. That's what makes it the largest company in the world.
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In logical fallacy terms this is a "hasty generalization," or "leaping to conclusion."
Representativeness heuristic- http://en.wikipedia.org/wiki/Representativeness_heuristic
For an example of why AAPL is not a good proxy for the economy or the rest of the computer hardware industry look at its desktop and laptop growth over the past 26 quarters versus the competition.
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Mine shipped today, base CPU with 16GB, doesn't feel like it's been two weeks. ..
When did you order?