Their problem is execution - they don't seem to sucseed in true ride sharing(few people share the same car), which is a protectable business, once won. On the

Their problem is execution - they don't seem to sucseed in true ride sharing(few people share the same car), which is a protectable business, once won. On the other hand, some of their competitors, like via seem to manage to do that quite well(altough currently supported by VC money). So i wonder, what's the secret that Uber can't seem to copy ?