Do you see them in this format when you sign up for Google Drive, or do you simply see one of those checkboxes that say "I have read and agree to Terms and Conditions," with a link to a huge wall of text of legalese?
I have been using Google Drive for many years and I was never aware of these restrictions. I wonder how many Drive users were aware before seeing this article. If it is less than 50% (and I would be surprised if it isn't) it is Google's fault not individual users.