Water, food, housing, healthcare, telecommunications, computing (including artificial intelligence). I guess it's "socialist" to believe that these baseline needs should be, and can be, free for all of humanity.
One day we'll look back and laugh at the stupidity of our current state of civilization, that we'd need to pay anybody anything to live on this planet that provides all those things and more for free. Pity us, future people, I hope we grow up soon.