Disclaimer: The following is my observation in general. There are always exceptions.
Here's a fun drinking game! Every time you see fancy in this blogpost after this sentence, you take a drink!
You know that guy. He's the one with a fancy website, fancy (empty) forums, makes fancy blogposts about the icons in this fancy new game that they are making with their fancy team. Sometimes they even call themselves a company. You can see em on the dev forums talking about things they don't know, but they add fancy words to make it look like they know something. You know who they are.
You also know about their "company." Looking at their fancy website, you note that it hasn't been updated in 8 months. The forums haven't had any posts by anyone NOT on the development team. They often make fancy fangames. But you know what the most striking thing about their company is? They always want to be taken as a serious business.
Here are my observations about these teams:
1. Know-it-All: Granted, I myself have quite an ego, and I do have my own faults. Sometimes I am misunderstood, sometimes I'm genuinely wrong. But these people take it to a whole new level. Example? There have been many complaints that pixel-movement "lags" their server to hell and back (it shouldn't).
2. Criticism: They respond to criticism very poorly. Instead of backing up arguments, they ban you from their fancy page. And it's genuine criticism such as, "This game function seems poor, I suggest you make it more like this." I'll admit, I do love seeing the trolls come out to play, but the trolls often bring up good points within their obvious insulting.
3. Anime Games: Dear god, why must they all make anime games? This is obviously just personal belief, but if you can make an anime game, you should be able to make an original game with the same theme as the anime game without actually making the anime game.
Essentially, it boils down to this.
Appearance. My observation is that all of these "companies" want to look serious. There are probably many sources for this, but I feel the main source is the anime game they make before forming these teams. They're ridiculed because of the anime game, and they feel that if they are a company, they can dodge this bullet. If they form a team before making anime games, then they're probably new guys who want to be bigshots and feel that an anime game would be a perfect way to ride to the top.
No matter what the case is, time after time, I have seen these teams fall. They stop making games. There is infighting because someone got more GM powers than the other. They reduce themselves to "my job is more fancy than yours." They form these fancy companies to make games, but they don't make anything lasting.
There's no fancy point to this post, so if you're looking for a conclusion you will be disappointed. After all, it is merely an observation.