No. The light leek is an issue that wouldn't present itself in normal use, and slipped by. There is no way that Canon would release a flagship product, and start full scale production, unless they thought they had a solid product. Selling a beta stage product, as a final release, is a sure way to lose the trust of your customer base. Things do slip by on occasion, and did here.
No company can ever know precisely what they'll need to produce for a consumer product. The best they can do is estimate. Take the iPhone for example, no matter how high they estimate initial demand... they've always been caught woefully short.
Original iPhone released 3Q 2007 - Sold 270,000 units 3Q (The original Jesus phone)
iPhone 3G released 3Q 2008 - Sold 717,000 units 3Q (More than double the original sales)
iPhone 3GS released 3Q 2009 - Sold 5,200,000 units 3Q (More than 7x the 3G sales)
iPhone 4 released 3Q 2010 - Sold 8,400,000 units 3Q (3.2 million more than 3GS)
iPhone 4S released 3Q 2011 - Sold 20,300,000 units 3Q (More than double the iPhone 4)
Seeing as how Canon kept the specs and release of the 5D3 under wraps until almost the last minute, it's quite possible that they were a little low in their estimate. They probably figured that the lack of extra megapixels, and the increase in price, would have kept sale a little lower than they turned out. That said, I don't think they vastly underestimated demand, if they had - you would see a lot of people trying to sell them for more than they paid. This is not the case, although if the recall/hold lasts more than a couple of weeks, you may see more people trying to sell them at a profit.