what would a barista or janitor get paid at Google today? I always thought that they did use subcontractors for these roles? I must misunderstand, are you implying that employment via a subcontractor would increase their salary?
Subcontracted workers are technically not employees of Google, therefore can be disregarded when making claims about the min salary of employees.
It's all a bit tongue in cheek and silly.
It does have some real world consequences because of some regulation that requires companies to publish some information about the ratio between CEO pay to lowest paid employee.
But as we noted here, who is officially an employee and who ain't is flexible.
Uber and eBay and Amazon are an even more extreme example: Uber drivers and eBay sellers are at the heart of what makes those companies tick. But they are not employees.