That is correct. By using their services you forfeit any claim you might have to the data. Its theirs, not yours, even though the data wouldn't exist in the first place if you hadn't provided it to them by using the service. People raised a huge stink when it was discovered that Facebook "owned" the copyrights to whatever pictures people uploaded to that site (it was in the EULA, folks...), and those photos started to show up in worldwide marketing for that company as well as "third party partners". Now, people just go into cognitive dissonance and say, "Well, I have nothing to hide..."
Obviously.
The best course of action is to never have the Google account in the first place. However, something has to happen to counteract the "shadow profiles" they and other companies build on non-account users. The poor souls who are identified by their idiot friends and acquaintances who upload their contact lists to Google, Facebook, LinkedIn, etc. The people who "tag" friends by name in uploaded photos. I have never allowed anyone to take my picture - outside of the DMV - but I really feel bad for the people who thought they were just having a good time with their friends and now their lives are posted and identified even if they don't want them to be.