Few professions attract as much despise as taxis, and this is worldwide. Hotels and hostels being undercut by AirBnb because of taxes? Yes we could have some compassion. Taxi drivers? Unanimity against[1]. Worldwide.
The debate is not only for NYC or DC. It's knowing that your transportation service in Paris, Kinshasa or Moscow has a 4.5 rating.
[1] I don't even have a personal opinion on this, personally I loved cabs in Madrid, but I'm just taking notice of a worldwide trend.