This isn't a useful metric as it's obviously bad for retail and service industries, and good for tech simply because of their business models. The median wages are really high when you outsource most of your labor and your actual "employees" are a handful of high level engineers. Spectrum for insurance is scummy but you can't just hire people in China to do service calls or upkeep infrastructure, ya know?
Also it doesn't include ownership. 1:1 with AirBnb is misleading for instance as it's probably mostly their execs on the team and their compensation is in stake at the company. Their business model also counts everyone as contractors, so there's that too.