Let's say these people are envious. So they get their own bus! Buy it outright, and use it for their own travels. Well as soon as that bus pulls into a city bus stop, they get fined $300. Google's buses don't get fined, only poor peoples' buses get fined.
Google is currently working with the city on a better solution. The city, and everyone in it, have incentive to cooperate with Google since they attract tax revenue, while attempting a solution to not bring extra congestion to the city streets. I don't believe this merits the level of hostility that I have seen.