The shuttering of an alleged illegal Airbnb empire which included 130 apartments that hosted 76,000 guests in New York City highlights the difficulties of regulating the sharing economy, says The New York Times. Airbnb's home-share model has been captured by some larger real estate firms, who maintain apartments for short-term rentals — legally and illegally. The practice has contributed to accusations that the company is "hollowing out" popular destination cities, driving up prices and filling downtowns with tourists rather than locals.