Yelp's own actions notwithstanding, it is quite true that Google has pulled some questionable moves and is clearly attempting to drive traffic to their own products.
Not that I like Yelp however ლ(ಠ益ಠლ)
Not that I like Yelp however ლ(ಠ益ಠლ)
the analogy is more like that of a car manufacturer gaining 90% market share, designing the interface between it and its seats to be proprietary (and preventing other manufacturers from learning about it except through a business agreement with them), then getting into the seat business and making it clear that third-party seat manufacturers make inferior products.