For people who like the whole space trading-exploring-combat sim genre (admittedly a niche group) there's likely to be tonnes of content. Compared to Elite: Dangerous it seems to lack realism but makes up for it by selling a more fantastical experience with a focus on survival more than profiteering. As long as the game is functional you can pretty much guarantee it will get some players who will play for a long time, though how many of those there are depends on how fun the mechanics are and what the pacing is like for the effort/reward ratio.