"The goal of the results is to return 10 useful websites, related to the query. Ownership is irrelevant. "
it's usually not useful or different - at least from what I have seen, it's often all the same thing - a page with an address or some benign piece of information, surrounded by 12 different monetezation opportunities using stock photos...a site that has made efforts to be anonymous or to conceal who they actually are - ...that, to me isn't useful at all to see dominate the serps.
If each site is useful and **different** in it's own right, that's another story....
A dead giveaway for me for someone trying to trick their users into a lead, form fill, or ad click is that the 'contact us' page doesn't say anything about who is being contacted, and there is almost no hint on the rest of the site as to who is behind it. If a company or person can't even 'vouch' for their own content by putting a name, name of a company, an editor, or publisher on the site (obviously) - or if they go to lengths to hide who the parent company is...then something isn't right with the intent of the website and company.