See now I see a lot of libertarian-ish and libertarian-ish-adjacent commentary on here and effectively nothing that could possibly be called socialist by anyone who wasn’t already way right of center, but then I also don’t see merely calling for regulation as being automatically socialist, especially in an environment in which unregulated scams are the norm (see the entire crypto space, for example) or when you’re talking about objectively harmful/predatory industries (petrochemicals, tobacco, patent pharmaceuticals, etc).
Honestly nationalising the railways isn’t necessarily socialism either, if and when the for-profit companies abandon even attempting to reliably run the damned infrastructure and move to generations of collusion, monopolies, and rent-seeking instead. There’s a point at which rail lines are no different than highways systems or the sea and are better managed as part of the commons even in a capitalist / libertarian system precisely because there’s no way to distinguish one carrier from another in terms of competition.