In general FDev will never say never to any possible future feature, because from the outset this game was set up as a ongoing development and they will not even know for themselves which priorities they will be setting if they really are still working on it in 10 years from now. Even their road map will not be that conclusive because the economic repercussions of their next steps in the coming 2-3 years may lead to a reconsideration of what they had planned for the time beyond that nearer future anyhow. So the only real certainty one can take from their negative statements is that it most certainly wont happen in the coming 2-3 years.
Unfortunately, with the commercial model they chose (one time fee, plus very occasional DLC fees instead of a subscription), the income generated by ED will not be great, and that will diminish their motivation to invest and create for the game. I would hope that they would either release paid DLC's much more frequently, so that there is an intrinsic motivation for them to further the game - those users who are lost on that path because they don't want to pay that kind of fees, are a collateral damage - unfortunately this game is going to stagnate at the same rate as now and even worse if FDev don't change their commercial approach. And because I really fancy the game, and have spent endless time in it, I am more than happy to financially support improvements to the current approach of FDev.
What doesn't make any sense, is to complain about FDev not doing enough for the game and at the same time believe that all of it should be cool with your fee paid for the purchase years ago. How would FDev recover the investment in that case ? Just with the one DLC every couple of years ? Or with the very few new players it is attracting with every new DLC ? No way that that adds up at the end of the day.
The player base would have to unify and propose such model to FDev in order to get them thinking about it. Commitments, from both sides.
But alas, that is not going to happen.