In 2018 a group of Valve staff tried to figure out just how efficient they were being—and found they were making more money per head than Apple, Facebook, and nearly every tech giant out there
If I recall correctly from a People Make Games video (great YT channel btw) all Valve employees have access to how much money Steam makes, so they can apparently just login and look at them anytime they feel like it. The profits of Valve might be shown in a similar way to employees.