I really don’t think it’s a conscious choice. Just Chris Roberts’ typical perfectionism and nobody there to say “Ok, this is enough, we must ship something”.
Having said that, I used to think Elite Dangerous had the superior model, but they’ve proven me wrong by going to absolute shit with Odyssey (no VR support, no walkable ships) and pretty much dropped all development thereafter.
Eve Online is much much more strategy (third-person) and diplomacy. You don’t get anywhere without getting involved deeply with other player groups (corporations). It’s more of a business sim than a space sim.
SC is much more pew pew and first-person and teamwork will be much more casual.