the important thing is not socialism: it’s a government that deals with negative externalities

socialism tends to do better at that simply because often it often does better at long-term planning (but that’s not a given either), but capitalism without corporate bullshit, stock markets, etc (ie actual ownership over a business rather than just ownership over a vague thing where you’re only concerned with line goes up not long term business health) has pretty much the same drivers: long term sustainability and this holding others to account for their negative externalities