Here's and article by John Dvorak, that certainly makes for an interesting reading. Enough to put doubt into theories of Clayton Christensen. However, on a closer read, you realize that he is just twisting the facts. This is the classical case of just arguing and proving point . You make a convincing argument for X and then concluding by refuting Y. By the way X never really had any relation with Y. But atleast the people who are not familiar with Y, would tend to agree with you and wala, you've got yourself a fan following (Of those who hate X or know nothing about it).
Its like saying..
Cows eats grass
Cow is an animal
Therefore Animals eat grass
Lion is also an animal
Therefore Lion also eats grass.
Other variations of this twisted logic are frequently employed by war mongers or politicians. A classical example is that used by Senators to convince Brutus that Ceasar would lead to Rome's demise. They convinced him that although Ceasar was not evil now, but evil resides in him. Resident evil, would rise some day and that day, Ceasar would take Rome down. So its better to kill Ceasar now than wait for eventual doom.
Its amazing how even well meaning people like Brutus, get taken in by this twisted logic and kill a good man(read idea)
Oh, by the way the here's a link to X. Make up your own mind.