"I would say a government has more incentive than any private entity in maintaining roads. What incentive would a private contractor have in maintining it right? If it gets paid a fixed rate for "operation" then the more skimping on quality means more profit."
I wasn't necessarily comparing to private road operators, but you clearly don't understand the concept of competition. Of course a company who would have zero other competition would be horrible at road maintenance (just like the government operator). But that scenario does not and would not exist. If private road operators were able to properly pay for and acquire the right of way to build new parallel roads, people could choose the best route to get somewhere. So of course it's a bit more complex than that, but you get my point. Also, different modes of transportation provide incentives to maintain the roads well by private entities. This is not true of a government. If people prefer the local trains because the roads have too many potholes and feel dangerous, it won't just go fix the roads. There are so many political wills to take into account, plus lobbying, labor unions, regulations, and the personal feelings of the legislators. It's much simpler and more straightforward for a private company compared to a government.