Airbnb CEO @bchesky envisions Airbnb becoming a marketplace where people can monetize any asset they own, turning homes, cars, boats, and more into income-generating services. "One way to think of Airbnb is just getting more capacity utilization out of assets. Anything that's empty could be further monetized, and the world could be a bit more efficient." "It could be cheaper to own a car. It could be cheaper to own a house if you could defer the cost by sharing with other people. That was…