Earlier quoted context omitted.
"All employees at MSFT get more than one machine connected to many screens" Just out of curiosity, why does everyone need more than one machine?
They don't. Perhaps all devs get more than one machine, but not every employee ("blue badge") gets a 2nd or more system. My sole company-issued computer is a ThinkPad. Note: I'm in Ops at MSFT.
Honestly, the only blue badge that doesn't really need more than one machine is PM. Both SDE and SDET definitely need more than one to develop and test. Ops can manage a cloud with just one, but in theory, we all know that Ops has access to a ton of VMs, so I consider them as more than one machine.