The Innovator's Dilemma: When New Technologies Cause Great Firms to Fail, generally referred to as The Innovator's Dilemma, is the most well-known work of the Harvard professor and businessman Clayton Christensen.
First published in 1997, Christensen suggests that successful companies can put too much emphasis on customers' current needs, and fail to adopt new technology or business models that will meet customers' unstated or future needs; he argues that such companies will eventually fall behind.
Christensen calls this "disruptive innovation" and gives examples as diverse as the personal computer industry, milkshakes, and steel minimills.
The book proved popular; not only was it reprinted, but a follow-on book entitled "The Innovator's Solution" was published. His books "Disrupting Class" about education and "The Innovator's Prescription" about health care both utilize ideas from the Innovator's Dilemma.