Sometimes obstacles can spark the most successful products. Before the Airline Deregulation Act in 1978, the Civil Aeronautics Board (CAB) regulated all kinds of aviation-related policies in the United States. Fares, routes and even schedules needed to be approved by the government. There were standard tariffs for companies, so airlines weren’t allowed to compete on price. The CAB also prevented airlines from giving incentives with a monetary value of more than 75 cents to their customers. In other words, it was very hard for airlines to stand out from the competition, as they couldn’t compete on price or offer gifts to reduce the price of an airline ticket – hence the introduction of the Blue Delft Houses!