“One of the most consistent patterns in business is the failure of leading companies to stay at the top of their industries when technologies or markets change. {{w|Goodyear}} and {{w|Firestone}} entered the radial-tire market quite late. Xerox let Canon create the small-copier market. Bucyrus-Erie allowed Caterpillar and Deere to take over the mechanical excavator market. Sears gave way to {{w|Wal-Mart}}.”