Their characters exist within and contribute to the same setting my character exists within and contributes to. Everyone else sets the lowest common denominator in a shared multiplayer game and when it comes to Elite: Dangerous, that denominator is so low that I now have a game where a large fraction of gameplay has been rendered entirely moot by effectively removing credit supply constraints. Credits may as well not exist and this undermines much of the fundamental basis and motive for a large amount of what's supposed to be going on in the setting, including many interactions with other player characters.
I can willfully ignore even more of the game and try to pretend that this is a single player game that revolves around my CMDR, setting arbitrary constraints on his progress and refusing to acknowledge the setting the game actually describes, but that's not really a solution.
That sounds like a whole lot of nothing if im honest.