It is a factually correct answer however
Elite Dangerous has it's own form of player groups, the Minor Factions, and there are simple and direct ways to create one, I know having recently been involved in the process myself. I have many years of playing games with groups, large and small, in any number of different game genres online. I've seen literally no support at all for them in very successful games to awesome support for them in failed games, and the only difference in those was the worth of the game itself, NOT in how it catered to or didn't cater to player groups.
Most groups use Teamspeak or Ventrillo or Mumble or some other 3rd party voice comm software to communicate within the group, both while gaming and while not gaming. They tend to get their own website together or use Facebook or another site for that purpose. And that is totally without regard to what the GAME might offer in the way of group support, which most groups could really give a rat's furry rear end about, as they are going to use these tools I mentioned anyway, they are tried, true and free and work OUTSIDE the game itself. I'm the XO of the Shadow Rats Marauders, 20 years of gaming together online, we have our own TS server, we have our own domain and website which we've been known to update once a decade, if anyone remembers we have it, because most of our communication takes place on our TS server or we simply text each other(for those of us in the same country that is, we span the globe with members).