The third critical element of the model is the distinction between sustaining and disruptive innovation. A sustaining innovation targets demanding, high-end customers with better performance than what was previously available. Some sustaining innovations are the incremental year-by-year improvements that all good companies grind out. Other sustaining innovations are breakthrough, leapfrog-beyond-the-competition products. It doesn’t matter how technologically difficult the innovation is, however: The established competitors almost always win the battles of sustaining technology. Because this
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