I don’t think they’re used much by anyone who has these issues (lawfirms, Hightech R&D companies, etc.). Google workspace is huge in education, and among people and organizations who don’t want to pay for Microsoft, but I think a lot its popularity has to do with price. Even medical professionals have to be careful - in order to be HIPAA compliant they need to sign a BAA. There are also data privacy issues with some of these services - if you type in someone’s name and address into a document in Germany, and that gets sent to a server in the U.S., are you violating european data privacy laws? I am not a European lawyer, so I don’t know the answer, but it’s something that I’d be careful about.