Follow the Money is usually the right answer. If an essential economic sector (like people transport) is made less efficient, then there is going to be more revenue for private companies and thus more private profits to be made. This less efficient sector will be a worse outcome for most people in society, but it’s going to increase profits for the shareholders of those companies. And in the USA, it’s those shareholders that matter most to the politicians.

The same explanation works for USA healthcare, USA ehabilitation of criminals, USA telecom services, …