> Consistently over time, the most successful entrepreneurs I’ve seen weren’t fighting the world – they were merely building the best sails to move faster than anybody else.<p>What causes the winds to change? There must be some new innovation for people to want sails in the first place (to butcher your analogy).<p>> That’s why Groupon clones are making millions a month with unoriginal ideas. The business model is already well understood and customers are familiar with it. The Groupon model is a trend that extends well beyond the company.<p>This is all true but ignores the fact that until Groupon <i>started</i> the social coupon trend, no companies made any money with this business model (because there were none, or none popular enough to matter).<p>> Those who built great iPhone apps at the time also know about these trends. Their success had more to do with a “force of nature” (millions of users thirsty for apps) than with their talent designing apps.<p>Again, yes, but no one wanted any apps (or even knew what an "app" was) before Apple decided to invent the iPhone.