David, I totally agree with your point & being an administrator i know very well that there are number of departments works together to make things easier. it's not really that business depends on this sync tool. This is the situation Microsoft has created by it's own marketing which had conveyed the message that (Put all your files in "OneDrive"" or "OneDrive for all your files"....)
Users are always there to complain & these complaints actually helps to understand the more & more growing requirement & making it possible. But for making a complain people should have something to work on & finding the issues.