The roads in the UK I know nothing about, but every single other item on your list was piloted and underwritten by governments. Big outside investment eventually came along, but only when the technical issues were understood and governments had agreed to assist with governmenty issues.
Not at all my dear chap.
Even at Jimbo's Truth Emporium, we learn:
The railway system of Great Britain, the principal territory of the United Kingdom, is the oldest in the world. The system was originally built as a patchwork of local rail links operated by small private railway companies. These isolated links developed during the railway boom of the 1840s into a national network, although still run by dozens of competing companies. Over the course of the 19th and early 20th centuries, these amalgamated or were bought by competitors until only a handful of larger companies remained (see railway mania). The entire network was brought under government control during the First World War and a number of advantages of amalgamation and planning were revealed.
In other words: it worked until the big intra-european massacre which Britain though it could participate in for frankly unclear reasons (now being retconned to "protecting the freedoms"), at which point frank socialization occurred, as one never should let a good crisis go to waste.
When "governement" does something, it does not "contribute". Government is also not structured to do anything (otherwise there would be no wars and decisions would either make sense or be followed by firings). It ignores economic calculation. Destruction of economic well-being necessarily ensues, otherwise the Soviet Union would have been the splendid land of proletarian freedom, so glowingly presented to us by the starry.eyed press of the 20s. Ah yes.