Which tech company famously cannibalized its own successful product line in 2007 by introducing a revolutionary device that made its previous flagship product largely obsolete?

Product cannibalization occurs when a company's new product reduces sales from its existing products. While often feared, strategic cannibalization can actually be beneficial in certain market conditions. This trivia explores a famous case of intentional product cannibalization that defied conventional business wisdom and resulted in increased market dominance.

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Apple (cannibalized iPod with iPhone)
Microsoft (cannibalized Windows Mobile with Windows Phone)
Sony (cannibalized Walkman with PlayStation Portable)
Amazon (cannibalized Kindle with Fire Tablet)