It's common, but it's far from "any war story," lol. Even Blizzard has done way better in the past. Like, StarCraft for example. Three distinct races vying for supremacy over a sector in the universe, all with their own sub-groups and characters who had reasons and personalities. There was no chosen one, no banding together (outside of temporary alliances, which is a completely different deal), no overarching enemy who was bad just to be bad. And it was a lot better than anything they've come up with since.
And yes, it is the most common tropes. And no, Blizzard aren't the only ones who does it. That doesn't mean that it's a good thing that they are doing it, or that they can't do better.
Yeah well, star wars always sucked.
This is a silly argument. Comics holds thousands of different stories. Some definitely fit into the category, but that's to be assumed from a sample size that big. Comics have told most stories, traveled most places, had most plots and plot twists, and they are far from all being able to fit that category.
Nope. While a Song of Ice and Fire has the elements that might end up telling that story with Azor Ahai, the Others etc, we really don't know if that's how it will end up. What we have so far is just the War of the Five Kings, which is inspired by the War of the Roses, which is actual history and not that one boring trope.
(you probably want to get the title right before calling people newbies the next time)
Oh, I'd love to hear your arguments about this one. The evil for being evil I can buy, but where does the chosen one come in, and the banding together?
Uh, there are a lot of stories that aren't this exact trope. ASOIAF, which you mentioned, is pretty darn epic without having the need for either someone who is evil just to be evil, or any chosen ones. And that's one of the most all encompassing.
The fact that it's old and has been around for so long isn't really an argument for that it's good. The same thing can be said for keeping slaves and marrying minors.
It made sense back in the day when good and evil was concepts very different than the ones we have today, and stories relatively scarce. I mean, Tolkiens LOTR is probably one of the most famous examples, but when he wrote it it was still somewhat new.
However, in the modern world with the abundance of stories we have now, it's dull and stale. It's mostly used by immature authors (Eragon), or mediums directed to a younger audience (Naruto). Good vs evil is a childish way to view the world when in reality, it's never that simple. That's why more mature audiences is interested in more mature stories.
And that's the problem. Blizzard is writing stories for children, when their audience is a lot more mature. Whether it's because they're clueless about their demography or too scared or incapable of writing something more interesting, I don't really know. But it's been like this for a long time, and nobody neither expects Blizzard game to have a decent story anymore, nor does anyone play their games for it.