True sometimes, not at all other times. Or else we would all still be using Friendster. I agree in this case there are significant barriers to entry and that on

True sometimes, not at all other times. Or else we would all still be using Friendster. I agree in this case there are significant barriers to entry and that once Uber captures the market they will likely have it all the way through to self-driving taxis (10 years?), but there's some VCs out there that like to fund the underdog under hopes that it can leapfrog and then got the overpour of an already existing market that has learned that a technology exists (whether that be the technology of logging on and seeing what all your friends did today or the expectation that you could press a button on your phone and have a driver show up at your door in 5 minutes)