I recommend everyone to watch this episode: http://www.imdb.com/title/tt5497778/
The episode is a bit scary, but of course, the future of rating does not have to be like this. And like a mentioned before, companies are already implementing social rating (like uber), so it is already happening.
Also, i recommend funnier similar episode from community: http://www.imdb.com/title/tt3278596/
Social ratings is one of the topics of tv shows or movies for some time. We can find lots of content about it.
But in reality, these are just extreme possibilities.
If it already this much on television, we can conclude that social rating is something that is already much alive.