Did we miss Bloodlines, Fallout, Mass Effect, Borderlands, Shadowrun, Deus Ex, KotOR, and others?
While wishing more games were set when you wanted them to be is fine, why the hell would you want a rule (whose rule? Enforced how?) dictating what else could be published, rather than allowing the market to determine what should be made? I'd love to see a gritty, no magic, historically accurate RPG set around 165 aD in Rome, a CRPG adaptation of Mage: the Ascension, and God help me, Black Isle reformed to make a follow-on to Torment, but I would certainly not want my views forced on others. I also recognize my opinions are not those of all others and I'm not the only one whose voice should be heard.
WRPGs have been made in dozens of settings and timelines besides medieval fantasy. Nor do most such games use the typical "bad Ren Faire" music, as most use a contemporary classical music set, barring the nigh obligatory tavern scene. Dragon Age was an obvious example; the entire score is pretty much standard contemporary classical, appropriate for nearly any adventure movie regardless of genre with a similar dark and gritty tone.
Come to think of it, dark and edgy stories are quite common in fantasy RPGs, including PlaneScape: Torment, Dragon Age, the old BG series, etc, etc. Pulpy stories are less common, mostly because RPGs of all stripes avoid going for a pulp feel, preferring to (adeptly or no) try to play up the tone of an epic.
I'm really not sure what you mean by this, since there are plenty of WRPGs set in later periods, the music is not commonly as you described it, the art of the middle ages has little to do with how fantasy is portrayed, and so on. One may have preferences, but having them and expecting everyone else to share them are two very different things.