For Uber Technologies Inc. and Airbnb Inc., New York City has been a cradle of growth, with its 8.5 million residents and burgeoning tech startup scene.But the highflying tech firms are also finding that their biggest U.S. market is generating its own obstacles.This week, New York has passed legislation that could hamper the Silicon Valley heavyweights at a crucial moment as they prep for potential initial public offerings expected as early as next year. Some investors and executives of the companies have privately expressed concern that New York’s restrictions could spur other cities to follow suit.On Wednesday, despite weeks of lobbying by Uber, rival Lyft Inc. and others, the New York City Council passed a bill to freeze new issuances of ride-hailing licenses, a measure Mayor Bill de Blasio embraced.And on Monday, Mr. de Blasio signed legislation that would require Airbnb to disclose to the city detailed information about its hosts, which could wipe out a share of listings by cracking down on illegal rentals and spooking other hosts from listing.
