True, not only Tam, many people has vested right perverting the improvement of the society, and take the largest advantages. But what I concern is that the uber policy is changing and becomes more harsh and not conviencent to the users/drivers. (I am not sure now, but before there was a changes that the estimate fee was not accurate, need to pay much more after the ride...) And sometimes uber drivers and customers are too picky. Also revenge like grading also discourage people using the service... the matter of human being..