This document discusses how online marketplaces and platforms are facing evolving regulatory challenges related to outdated laws and regulations. It provides examples of how companies like Uber, Lyft, Airbnb and others operate in a gray area between existing classifications of employees and independent contractors. The document also discusses how StubHub was initially facing barriers due to anti-scalping laws but is now legal in most states and has helped provide marketplace liquidity and trust/safety. Overall, it argues that as the economy evolves, regulations need to evolve as well to effectively address 21st century business models.