I don't know, I've worked with tiny startups and bigger companies like Red Hat, and huge banks, and GSuite is very widely used. The biggest corps don't seem to use it, but I definitely don't think it's only used in a small insular bubble
I'm worried that Google ADHD strikes Workspace, to be honest the reason many still stick up with Microsoft is that they understand the proposition of enterprise software, but assuming Google didn't touch Workspace like it did for its messaging and payment solutions it could be a 50/50 split.