> Because any challenge will lose. It is in their terms of service that what they are doing is legal.
I don't think that's even close to a given, but consider how much time and money it would take to fight that lawsuit — they would be loathe to settle since it'd validate the idea for other customers, and you'd have to put in that effort hoping that they wouldn't succeed in being able to say it was a misunderstanding on your part or some nebulous “bug” which has reportedly been fixed. Most people don't lose anywhere near enough money this way for it to be worth fighting, especially since a lot of businesses would be worried about potentially being demoted on Google Maps, search, etc.