Sounds like you live in the Silicon Valley bubble. I don’t have a stat but I would wager that most businesses (especially larger ones) run on outlook/exchange.

You have probably mostly worked for tech companies where business employees were not the primary workforce. When you think about it most other business generally have everyone needing a word, excel or PowerPoint. It bundles cleanly with the whole package.

> Sounds like you live in the Silicon Valley bubble.

I do, aside from research lab work on the east coast, all my career has been in Silicon Valley.