To be fair, the amount of classical music most people who aren't classical music fans are familiar with is like 1% of the total, and the vast majority of classical music fans don't play video games.
The simplest explanation is that video game composers just aren't that familiar with classical music to begin with.
As for this topic, most classical music fans, actually around even 99.5% of them are mostly just there because it's how they look or seem invested in "high art," but in reality are just following the classical music "fans" who are mostly highly repentent elderly figures who spent the vast majority of their life rocking out to Dylan, who manages not only to not be high art but to not even be a good pop artist.
Well, that, or they are the parents who just browbeat their children into it and which tends to manifest in the form of these people who played piano for like 9 years and yet always just wanted to be pop artists and they have that whole rebellion thing and etc etc.
Most of the people who really appreciate, well, not just classical music, classical literature, classical anything, have been gamers in my experience.
I had a couple amazing piano teachers for awhile one that was really passionate about Mozart though so I'm not going to throw all of those traditional people into one category, and the other who had a knack for finding really obscure and interesting things.
Actually though on that topic, Mozart is actually the greatest composer, used to have this discussion on a forum for classical music fans way back when.... yeah way separate story.... it's this combination of great confidence and a sillly message, which is extremely rare, well anywhere. Like if you hear Vivaldi, it's all fun and playful, but you know it's just silly at the same time, Mozart raises the stakes, it's like a power metal version of the essence of pop.
And on that topic Vivaldi is massively underrated. Beethoven earlier on was kind of like a Mozart-lite, had all the bells and whistles but wasn't at the same level necessarily.
And... I'm just getting increasingly off topic lol sorry.
Oh one more thing though! That ascension in the Lacrimosa section of Mozart's requiem..... that right there.. that... is something special.