It looks like you're new here. If you want to get involved, click one of these buttons!
Question in the title.
I honestly think it may be time. The usual argument against these types of MMORPGs is that there are far more casual players than hardcores, which is absolutely correct. However, I think it's time to look at the market share. Every other month it seems another huge MMO with the exact same premise but set in a different world is being released.
Recent/Near Future releases include: FFXIV: ARR, TESO, Wildstar, and the WoW Expansion.
What do these all have in common? They are all built to draw in the casual crowd over all else. That's 4 different "new" games pulling all on the same pool of players, and that's not even considering the current distribution of that player set within games such as LOTRO, GW2, SWTOR, and so on.
On the contrast, a Hardcore MMORPG would be only competing with near ancient games. What was the last truly difficult MMORPG we got, Eve? EQ Players are a committed bunch, but even that game is beginning to jump the shark hoping to get a share of the casual market - a market spread so thin it's no wonder they can't sustain.
With the recent release and reception of Dark Souls 2 I think people are coming around to wanting their games to be engaging, difficult, and thought provoking.
This type of game would absolutely exclude some players. I won't deny it, if you want the entire game to be soloable and to attain the absolutely best gear in a raid finder group - this type of game probably wouldn't fit your playstyle. That's ok. Not every game has to cater to every type of player.
So I guess the real question is : is the casual market so much bigger that it can sustain the 100s of MMORPGs that keep pulling at the same player pool? Or is it maybe time for a Hardcore MMORPG to pull from the significantly smaller pool of players that aren't spread anywhere near as thin?