Earlier quoted context omitted.
I disagree. http://www.rideaustin.com/ was launched in Austin a couple years ago when Uber and Lyft were temporarily kicked out of the city. The app had some growing pains but now I use them whenever I can in preference to Uber and Lyft because they pay their drivers more. If Uber and Lyft suddenly went away Ride could easily pop up all over. Of course, Uber and Lyft right now ARE so big because of all the advantages…
A service that exists in one city, (and can't even keep their appstore rating above 4 stars in that city) is not a good comparison.
A thousand local or regional competitors are just as much an existential threat to Uber as one or two big ones.