WeWork, the eight-year-old, 800-pound gorilla in the co-working space, hasn’t been known for being terribly acquisitive, despite the billions of dollars it has raised and its valuation, which one of its biggest investors, SoftBank, apparently believes to be approaching $35 billion. To wit, it made just one small acquisition in 2015 (Case), and one other in 2016 (Welkio).