You have to ask yourself: how indispensable are these companies? People can live without Groupon. It hasn't changed habits fundamentally. Uber and Airbnb, on

You have to ask yourself: how indispensable are these companies? People can live without Groupon. It hasn't changed habits fundamentally. Uber and Airbnb, on the other hand, have changed consumers' habits. If you can make something a habit, you're going to win (see: cigarette companies)