In my experience everyone uses MS Office or Google Docs, and LibreOffice still remains relegated to private individuals that don't happen to already have an Office license ... or Linux users.
I'm sure the situation is different in other parts of the world, where saving on license cost is more important.
It's a bit of a shame that eg governments aren't switching en masse.
But as a Linux user myself, I somehow tend to prefer using something like Google Docs in the (very rare) cases I need an office suite. Calc just isn't anywhere close to Excel, and the incompatabilities of Writer with Word make it problematic.