The article itself seem to cast doubt on the remote work policies themselves being the cause of the revenue growth, but that the remote work policies were more a symptom of the company's culture (more trust in their employees). Though it could just be a chicken/egg thing, where the only reason these companies are so flexible and trusting with their employees is because the company is already doing well, whereas companies that aren't doing well feel the need to "tighten belts" and start restricting things. To me, it almost seems like the canary in the coal mines. If a company starts restricting work from home, chances are there's something else already going wrong.