Sunday Review  | ​ ​NYT Now Claire Cain Miller is a reporter for The Upshot, a New York Times politics and policy venture. When Uber and Airbnb Meet the Real World OCT. 17, 2014 THE regulatory woes seem to be never ending for the newest wave of tech start-ups — the on-demand apps that connect people who need something (a driver, a house cleaner, a grocery shopper) with people who want to do the job. On Thursday, the New York State attorney general said most Airbnb listings in the city violated zoning and other laws. Officials in California and Pennsylvania recently warned car services like Uber and Lyft that they might be unlawful. And workers’ rights advocates have questioned whether the people who provide these services should receive benefits, spurred by recent reports that some  Homejoy house cleaners are homeless . Why have these companies run into so many problems? Part of the reason is that they think of themselves as online companies — yet they mo...