Except for in cases of monopolies, externalities, societal + shared goods and utilities. There are good arguments for at least several of those cases apply to

Except for in cases of monopolies, externalities, societal + shared goods and utilities. There are good arguments for at least several of those cases apply to uber in even a simple analysis: uber use creates pollution, traffic is less safe and causes accidents + deaths, uses more fuel, and few markets charge vehicles for road use by the meter/use. There are high barriers to entry and sunk costs to infrastructure to competing because if you do not like the road between two points, you cant just open up a rail on top of it that traverses the same route, and attempts to do so lead to massive inefficiencies due to the duplication in the relatively expensive infrastructure costs externalities (imagine the cost of trying to lay two simultaneous water networks, for example). Additionally, while uber may be more efficient in some routes, given population densities and given infrastructure and desired travel routes and given transport network patronage, uber trip cost/benefits don't scale. The marginal cost/benefit of you taking an uber trip rather than catching the train is not the same as the cost/benefit or qualities of taking uber if everyone whom the train was transporting was attempting to take uber.