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people create a false dichotomy
On a more general note, it has been argued that the we've been held hostage in the last 3 - 5 decades to an an in fight between boomers. Still trying to settle debates they had in the student unions back in the 1960s. You are either FOR or AGAINST something.
You could argue that Blair, Obama,Cameron, Macron etc were centrist wimps, but at least we were looking at a genuine attempt to break out of the polarised mind sets of previous generations.
The problem is that people create a false dichotomy of strict nationalisation vs privatisation, with whatever is currently not working being magically solved by swapping to the opposite extreme, and the detractors of the extreme (quite rightly) claiming that there's no proof that the opposite extreme will be any better.
Both can work, if they have the right oversight/regulation, but this has been sadly lacking for many years.
National Rail worked until the complacency set in. The Tories saw it as ripe for privatisation as "competition and the markets will fix everything" only for the franchises to be bought up by profligate corporations that were free to cream off profits whilst being heavily subsidised and rarely, if ever, being held to account. (See also water companies like Thames Water.)
The hard part (whichever path you take) is getting the oversight/regulation right.
Socialism and capitalism are both equally hard if you've got shit people in charge of things.