A tablet (assuming it exists) presumably would run the iPhone OS or similar, which gives them a much greater degree of product differentiation than just another

A tablet (assuming it exists) presumably would run the iPhone OS or similar, which gives them a much greater degree of product differentiation than just another laptop, even one running Mac OS X at a lower-than-current price point. This is important because the set of people Apple has been making stupid amounts of money off over the past 8 years is Windows users with no particular inclination to switch to Mac OS X. This is not obvious because we still think of Apple as primarily a computer company, but clearly they don't.