While this isn't a hard and fast rule, GSuite adoption outside of the "tech sector" is extremely low. We have to recognize our own biases and that the experiences of the average HN reader doesn't reflect the larger business world.
My professional life has been interacting with very large organizations (as clients, not employers) -- think Fortune 500 firms, if not bigger. Major oil companies (I live in Texas), major defense contractors, etc.
These are not GSuite users, generally speaking. It's Office and Exchange in these places. Microsoft is VERY VERY STRONG at the Enterprise level.