curtwoodward writes: "Even in libertarian-infused Silicon Valley, playing nice with the government can be a smart move. That's the attitude at RelayRides, a peer-to-peer car rental service that plans to expand at airports by getting permission first. On the other side is FlightCar, a competitor that would rather fight the power in court. The next couple of years should tell us which approach is smarter. Similar battles are becoming almost routine as startups born of the digital economy confront the real world’s established power systems, particularly in the emerging 'sharing economy,' where online tools help networks of consumers rent things to each other. And as these young companies try to manage rapid growth and fend off threats to their survival, the decision about whether to fight regulators or accommodate them can become another way to gain a competitive edge."