The national railway in the Netherlands is a great example of this. They've privatized but with gov't subsidies, yet there's less trains, less people getting moved by the remaining trains, ticket prices skyrocketing YoY, worse service, rail workers getting shafted and basically being forced to go on strike in order to improve conditions. They're (NS) a monopoly too and handle something like 95% of all rail traffic within the Netherlands.
I believe the UK is going through a similar issue, where their railways are now privatized and in turn it's lead to increasingly worse service despite there being plenty of competition in the market in the form of many rail companies.
This lolbert fantasy of the "free" market being good for literally everything, including critical public infrastructure is a complete farce.