...does GitHub not use Office 365 for documents? Seems silly to pay for a $12 or whatever per user GSuite license just for Drive and Docs when the rest of the c

...does GitHub not use Office 365 for documents? Seems silly to pay for a $12 or whatever per user GSuite license just for Drive and Docs when the rest of the company uses Office and its approximately free (or very cheap) since they work for MS. (Note: I know they have cheaper tiers of GSuite, I'm guessing with whatever security stuff MS infosec wants they'd have to go to a higher tier.)