This excellent book is a great read for business managers working in a technical field, or technical workers who want to know more about the issues managers are faced with. The dilemma is obvious: real innovation's immediate returns are small (or unknown) to a large company because real innovation causes a new market to open. Large companies often try to bleed more money out of their existing customers instead of seeking new customers for that very reason.
Unfortunately, that point gets made in the first two or three chapters and the rest of the book is only really necessary to further the point (for those who haven't worked in technology before). So, if you have worked in technology, only continue reading for some nice stories about decisions large and small companies made and how this dilemma has reoccurred in nearly any industry.