My apologies. You started your post with:
I assumed that "them" referred to the literature, not to the games.
It's
possible that a lot of game designers are unaware of the fantasy literature genre that came prior to LOTR. I'm not convinced, though, given the incidence of trolls, ogres, dark elves, vampires, undead, and a host of other fantasy "standards" which are found nowhere in LOTR. The Thieves Guild and Mages Guild are direct thefts from the Grey Mouser stories, and the settings, with city guards, castles, etc., are more like Grey Mouser as well. The above mentioned bestiary, to include things like walking skeletons and liches, is much closer in flavor to Conan, as are the dungeons you find in fantasy games.
In my opinion, the mainstream fantasy game genre derives as much from Leiber and Howard as from Tolkien. Most of the games from Baldur's Gate to Skyrim have much more in common with Conan than they have with Frodo.
I would claim no 'unawareness' of modern games of earlier works. I think that for whatever reason, LOTR seemed to be a tipping point, that got people into the genre at a much higher rate than at any time previous. Obviously people read works that came before or those works never would have survived. But it seems to me there was a large uptick in interest with the LOTR books almost an order of magnitude difference within the next generation. This is my *perception*, it may be faulty, but I think during my formative years, I saw it most often cited as a reason, or a backdrop, (many hadn't even read it!), or as something that got them into the genre.
I know there were lots of other stories before LOTR, but LOTR created an entire world that didn't seem to strongly derive from any single work before it. As opposed, for example to the Gor series which a derivative flavor for much of the first part of the series like a cross between Edgar Rice Burroughs Mars and Tarzan series...
But everyone has their unique point of view based on where and when they grew up (if they have
). If you look at the Japanese, they mine world mythologies for for source material for modern manga/anime stories... stretching them every which way... (along with unique story lines, as well)...
Certainly, you'd have to admit that at least in the -- maybe 70's/80's, many were gaming to derivatives of LOTR. Later, they went on to delve into other works for more material as interest grew for more content... LOTR (which I didn't read until a few years ago, BTW -- was much too dry / detailed/ cerebral for me as a teen-20something), stimulated intellectuals in a way previous pulp sci-fi had not...
In any event, I certainly don't think being similar to LOTR is a bad thing (IF it is even true, which I am not granting... just the idea that something deriving from LOTR might be a 'bad' thing, I found rather unbelievable)...