Comment by Certhas

What is your point? Sometimes it works due to other factors so we don't need regulation?

Beyond the very real closures of unprofitable rail lines that is always happening or threatening (including in state owned rail companies) your examples don't really measure up either:

Local airports are typically subsidized. So the infrastructure aspect is not market driven.

Eventually getting starlink means it was fine to not have fast internet for a couple of decades? We still don't have good mobile internet on many train lines in Germany. In Poland it's fine. The difference? Poland mandated that companies bidding for 4G meet certain coverage goals. Market forces have absolutely failed to actually get reasonable mobile internet to everyone.