Less than a year ago, when Commercial Observer put WeWork’s Co-Founders Miguel McKelvey and Adam Neumann on its list of the 100 most powerful players in real estate, their company’s shared workspace empire had been valued at a staggering $5 billion. But that was then. More recently, the company was reassessed, and the powers-that-be at Fidelity Investment decided that WeWork was worth another $10 billion on top of that.