> People generally prefer flat cost models for simplicity, even when it means they pay more than they would had they paid for each call. Not just in the tech r

> People generally prefer flat cost models for simplicity, even when it means they pay more than they would had they paid for each call. Not just in the tech realm. From the Wikipedia page on the Carte Orange,[0] an institution of the Paris metro for decades that let you ride as much as you wanted for a flat fee: While transit authorities had estimated that 650,000 Cartes oranges would be sold, within 6 months of its introduction 900,000 were in use.... they assumed that only those public transit users who would save money with the Carte orange would buy one, but this was not to be the case. Many people were attracted to the idea of using Parisian public transports without worrying about tickets or fares, even if it proved to be more expensive. [0] http://en.wikipedia.org/wiki/Carte_orange http://en.wikipedia.org/wiki/Carte_orange