And Github will definitely still have to "pay" for Teams, whether that is internal accounting or actual money being exchanged.
Consulted for a sub-sub-sub-subsidiary of Toshiba. All computer equipment had to be from Toshiba - the closest place to get Toshiba laptops was two COUNTRIES over.
They even had to tape over non-Toshiba branding from external displays that would be visible.
My uncle’s team was having none of that, so they paid an external computer repair service to fix their computers. The external repair service subcontracted to compaq’s internal people anyway, so when their computers broke they called up (and paid) external consultants. Who in turn called compaq’s internal support team, who came downstairs and fixed their computers at a competitive price.
If cost price is £5 and the markup is 20%, he has to pay £6 to get the part, then charge £7.20 on the invoice to the customer. I’ll let you guess what that does to tender bids ;-)