The iPad could offer “significant” cannibalization of Apple’s laptop sales, according to “Seeking Alpha” (http://seekingalpha.com/article/196954-mac-notebook-cannibalization-from-the-ipad-could-be-significant?source=yahoo).
“Seeking Alpha” estimates that there could be $15 (6%) downside to Apple’s stock if iPad sales were to eventually cannibalize about half of Mac notebook sales. Such a scenario could materialize if the majority of prospective Mac notebook buyers are primarily content consumers rather than content creators, the financial site says. )

About 18% of Apple’s stock value is attributable to the company’s Mac business. Mac notebooks are the most valuable component of the Mac business, constituting about 8% of Apple’s stock. In comparison, we estimate that the iPad constitutes about 4% of the $267 Trefis price estimate for Apple’s stock.

“Seeking Alpha” estimates that there could be $15 (6%) downside to Apple’s stock if iPad sales were to eventually cannibalize about half of Mac notebook sales. Such a scenario could materialize if the majority of prospective Mac notebook buyers are primarily content consumers rather than content creators, the financial site says.