This document discusses disruptive innovation theory and provides examples of companies that utilized disruptive innovation strategies. Disruptive innovation theory, proposed by Christensen, involves gaining market share through offering cheaper solutions to new market segments. The document examines how Samsung disrupted Apple's smartphone market by offering affordable low-end Galaxy phones and how Netflix disrupted Blockbuster by developing a new online movie rental and recommendation model. Disruptive innovations can help companies succeed by either targeting a low-end market or creating a new market.