I'm certainly not an apologist for Google. However, I wanted to point out that there are two distinct terms of service for Google Drive. If you read the Google Apps users version, there is no language about usage or publication of the content that you upload to Google Drive. The data you upload is kept private. The terms identified in your article DO apply if you use the free version of Google Drive on a free, personal Google account; and users should beware. Even if you pay for additional storage. Not only does the free service not guarantee privacy, it also doesn't provide the levels of security, SLA or disaster recovery provided in a paid Google Apps account. In Google's new unified privacy policy, they do state that data stored in their free personal accounts may be shared, but only in de-identified, aggregate form.
I'm not crazy about anyone using my personal data online. If you don't want anyone looking at what you're uploading to the cloud, you should definitely read the terms of service; and not upload personal data. If privacy is paramount, then pay the $50/yr for a Google Apps account. Use the appropriate service for your needs. You shouldn't upload anything that you don't want others to see to ANY free account; and while I'm being Captain Obvious, don't take your wife to McDonalds for your anniversary dinner.