IMO, if a client wants me to use a certain software product or quite, like #GoogleDocs or #Office365, then they should setup an account for me under their domain or account. 

That's logical, right? Why does that seem so perplexing to them? 

 An editor just asked me to upload a draft on Google Docs...

How do you think they will react when I tell them that I don't have a #Google account?