Are MMO Gamers and Developers Genre-Fickle?

If I ask you to name 10 MMO games in 10 seconds, chances are, only 1 out of those 10 games are not in the medieval-fantasy genre (and I seriously mean chance, so you can stop trolling your answers now). This has been a question lingering in my mind for the longest time now. Are MMO gamers and developers fickle when it comes to selecting their desired genre? Why is it easier to count the sci-fi/cyberpunk/steampunk-based games than that of medieval-fantasy/middle ages MMORPGs? I'll save myself (and everyone reading) the trouble of thinking and reading through the article's segment titles. Let's just get on with this random musing, shall we? If, however, any factual data disproves everything stated in this article, then by all means, show us this proof and I will be glad to realize the error of my ways.

Most games, MMORPGs for example, have this certain attachment to antiquity. Should we also consider ourselves attached to such trend? In all honesty, I see that as a yes. I'm sure you've long observed this. The fantasy genre (not necessarily Middle Ages or Medieval in setting) is less governed by the restrictions of the real world. We... well, not necessarily us, but the developers, are fascinated by the unexplained mysteries of the past, like magicks or dragons. We, on the other hand, sway in their influence since that's what's available and popular. Fantasy also has the advantage of excusing itself from a logical justification or explanation. There's no need to tell everyone why these creatures exist, or how magick came to be. The writers or the developers can come up with their own reason, such as Merlin, a black fog, or a god for every single thing on the land.

I'm sure most of you have come across the phrase "suspension of disbelief." The fantasy genre has the highest suspension of disbelief, so to speak. It gives a wider berth with what can or cannot exist in the universe. We always get to ask where things came from, and what it does. But the genre itself keeps us always hanging, and yet we still hold on to it! Although the mystery fades eventually with a farfetched explanation, we still continuously tie ourselves with the genre for its sheer amount of imagination and effort put into it. Unlike the fantasy genre, science fiction has more restrictions. This is certainly not a means to antagonize the other genres. This is just merely pointing out the facts that are in front of us. The sci-fi genre (even steampunk, cyberpunk, dieselpunk, post-apocalyptic genres) have a whole lot of explanation to do. And in the end, it gives us and the developers a fraction of the leeway we tend to receive in the fantasy genre. Heck, we can create minotaur-unicorns-with-wings and still get away with it.