Pretty sure that line predates anyone paying attention to Bezos. It is a natural implication of the disruption model of product design, and was discussed heavily in terms of changes in the computer industry before the web existed, let alone Amazon.
None of that changes the usefulness or correctness of the idea.
If a new tech comes along that destroys your business, you should invest in that tech or you risk becoming blockbuster while Netflix rises. If Blockbuster had taken its opportunity to buy netflix or build a competitor it would still be in business today.
Same thing with all those oil companies becoming energy companies. Solar and wind are displacing coal and oil, and all the big energy companies are in on it. They don't look at risk of going under soon.
