Hi,
Here are the five reasons :
Commitment. No one has ever made a truly committed effort to design a great tablet, though the original I.B.M. ThinkPad was, in fact, a tablet.
Technology. The underlying software and hardware were not ready for prime time, especially touch-screens. “The sole reason for the renewed interest is that with the iPhone, Apple has shown that touch can work elegantly, effortlessly and beautifully,” Mr. Blickendorfer wrote. “Copycat efforts will not succeed unless the copies also work elegantly, effortlessly and beautifully, which will be quite a challenge.”
Input systems. Tablets were based on immature technologies, like handwriting recognition and voice recognition, that weren’t ready. One promising effort — Palm’s Graffiti — was subject to an intellectual property dispute, and Palm ultimately gave up on the effort. Another initiative, dubbed ParaGraph, was “absorbed by Microsoft and now lingers in the mediocre Windows handwriting recognition implementation,” Mr. Blickstorfer wrote.
Price. Tablets have been positioned as premium-priced products. “No one wants to pay a lot extra to get a pen, especially when there is no compelling reason to do so,” he wrote.
Finally, software. Windows was designed for use with a mouse and is simply not suited for tablets. Considering most tablets have run Windows for the last eight years, “this is by far the most important reason why tablets never succeeded,” he said.