This kind of abuse is a logical consequence of ad based business models. If the person who uses a service/software is not the person who pays for it the result is a conflict of interest and quality will suffer. We're seeing different variations on this theme in enterprise software and in public services. It doesn't even matter that ultimately the user may indeed pay for the service indirectly. Once you cut the direct ties, the alignment of interest is lost and the whole thing becomes a futile ethics debate.