Google is said to be close to signing a $2.4bn deal to establish an East Coast base in New York City, the latest in a series of moves by tech firms who believe Silicon Valley‘s best days may be “over”. If it goes ahead, Google would be among a number of tech companies that are looking to expand their New York footprint. Concerns about the soaring cost of living in San Francisco, and worried that innovation may be accelerating faster in other parts fo the country, a number of firms are looking to New York and other cities.