We have not seen it on any of our clients' pages. We did successfully talk a prior client out of paying for 500 G+ reviews though.
At the same time, I'm not amazed that companies are doing this. There are entire TV shows not dedicated to putting Yelp reviews and restaurant owners in the same room to talk it out. Businesses know that 5* reviews make a difference and they're willing to do anything to look better online.
