As someone who is himself playing games since 1985 including most of the important ones on PC and all the major consoles to date, except xbox one (hey, I'm getting old nowadays), as well as being a significant player in THE MMO of our times, AND being a sim type player, I do feel I know what I'm talking about. The last 10 years of gaming has gone by in an instant for me. P.M. me for my resume if you like, but I will not be going out of my way to prove any of my claimed history, like I say, I'm too old for all that nowadays.
P.S. since you mentioned VR, meh, that's not the future. I have a DK2 and a CV-1, but I've been into 3d gaming technologies since the first shutter glasses appeared, oooh, 24 years ago? Edimensional, was really clever kit back then, we were overclocking our CRT monitors to get as many hz as poss to make the experience better, but yeh, I was playing pinball fantasies in 3d 20 years ago. So I know a thing or two about where that's going too, if you're interested (hint: Microsoft hololens meets google glass, that's the future).
Besides all of what you say, the games you refer to as falling by the wayside were not like Elite, and that is all that's relevant here. Elite is unique, it does not need to conform to gaming norms to retain its hardcore of players. Yes, there will come a time when we are a lot less, but we'll be enough for a long time yet, please, trust me.
Myself, I will continue to clamor for more meaningful pve content to make this a better fit to your description of an mmo, but not because I think that's important for Elite's success, just because that's what I would like for myself and a lot of other players who share my vision.