Airbnb does business in 34,000 cities, has a valuation of over 10 billion dollars, and in a very short time has disrupted the world of hospitality and travel. Its co-founder and CEO Brian Chesky envisions the future city as a place where sharing is front and center — where people become micro-entrepreneurs, the local mom and pops will flourish once again, where space isn’t wasted, but shared, and more of almost everything is produced, except waste. But the journey from here to there won’t be all smooth sailing. What are the ups and downs of the sharing economy, as businesses like Airbnb confront critiques about regulation, economic development, and fairness? What role might businesses play in creating more shareable, more livable cities? How will the sharing economy, with its de-emphasis on ownership, be a tool for addressing urban inequality?