In the past five years, sharing economy firms like Uber, Zipcar, Airbnb and TaskRabbit have generated both huge market valuations and fierce regulatory contests in America\u27s cities. Incumbent firms in the taxi, hotel, and other industries, as well as consumer protection, labor, and neighborhood activists, have pushed for regulations stifling or banning new sharing economy entrants. Sharing firms have fought back, using their popularity with consumers and novel political strategies, lobbying for freedom to operate as broadly as possible without government interference. But to date, both participants and observers of these sharing wars have relied on an unstated assumption: if the sharing firms win these fights, their future will be largely free from government regulation. Local governments will either shut sharing down, or they will leave it alon
