Billionaires warned New York would scare off business. Anthropic and Airbnb just made their biggest bets on the city yet

Anthropic is leasing a 16-story Manhattan building to expand its New York workforce, planning to double headcount to over 1,000 employees by year-end. Airbnb purchased a six-story Gramercy building for $81.5 million to serve as a major New York hub, defying warnings from critics like Bill Ackman and Ken Griffin about the city's business climate.