This book is a case study of the impact of TNC (Uber, Lyft) market disruption on the taxicab industry in Seattle. It examines what happened, why it happened and predicts what will happen in the future. The taxicab industry lost 55% of its business (revenue trips) to the TNC industry but has begun a modest recovery. The TNC industry engaged in a price war (charging one-half taximeter rates) to drive the the taxicab industry out of the market but has failed. The TNC industry has never been profitable and is now experiencing a declining rate of growth which may reach zero growth in 2020. Unless it comes up with a new business model, the TNC industry may itself go out of business.