>So public ownership of the resources and production of services...is capitalism?

Just because something is owned by the state does not mean it isn't a part of some capitalist scheme. The state is an actor like everyone else that is free to engage in capitalist endeavours. There are countless infrastructures that don't benefit the public in any way even though, on paper, the public "owns" these structures.

The state is often a key perpetrator in processes involving extracting capital and resources while providing nothing in return for the local communities. This is called extractivism and is as far away from socialism as you can get.