So roads are also socialism?

Privatisation of utilities has been fairly disastrous in the UK. I understand what you're saying but they're natural monopolies who have limited scope for innovation. They literally aren't really any different to roads or 'sidewalks'.

Probably the safest industry to put in the hands of the state, if you're going to do it.

I mean sure but then every mixed economy is going to have an identity crisis. You can advocate for public ownership of certain industries and still be a capitalist because that's the reality of it. In all public the economy collapses, in all private the economy collapses. You need both because the public side is how you survive the bust.