This might have been correct at the time Steve Jobs made the statement, but Apple really needs to reconsider.
Apple has always claimed to make devices for "creative" people, yet pretty much every artist on the planet wants Apple to release an iPad with a built in digitizer. Any student that knows what a digitizer is will also be likely to want one.
There is a huge market right now for stylii for the iPad, yet every single one of them is absolutely terrible. There are even a few third-party attempts at a adding a digitizer, and they are just as bad or worse.
Samsung's Note phones and tablets have been selling very well in spite of the fact that the digitizer's are often slow and buggy due to poor application support. If a company like Apple decided to give such a product their full attention, they could make something truly amazing. Perhaps they could even write their own pressure-sensitive compatible drawing/painting/note-taking programs to accompany the addition of the technology.
Sadly, there isn't any indication that they are interested in doing this. Instead, they are developing televisions that most people won't be able to afford and smart-watches.