>Who else is threatening Uber in the US for example? Taxis? Car manufacturers? >Who is going to spend billions to take the market away from Uber? Doesn't loo

>Who else is threatening Uber in the US for example? Taxis? Car manufacturers? >Who is going to spend billions to take the market away from Uber? Doesn't look like it's a very profitable market Uber is operating in, so why should anyone spend billions to do so?