What to do after getting rich?

I bought the game a week ago and made a couple million by flipping ships. But after decking out my own, I feel like I've done it all. The social system is really bare bones and I don't see any rpg life-sim elements since the survival element is really easy to deal with and you can't do anything else meaningfully besides salvaging or flipping. So is there anything else the game can offer past this point ?