Source: HBR, Dec 2015
Disruption is a process, not a moment in time.
Disrupters typically utilize different business models, not just different products or services, from incumbents.
Disruptive innovation does not guarantee success.
Critics point out that plenty of companies that Christensen deemed disruptive have failed. Christensen and his coauthors counter that the theory was never intended to be equated with success, saying it was intended to explain an approach to competition.
A company does not necessarily have to disrupt its core offering when it is being disrupted.