Are Game Companies Becomming Too Big

Are there some videogame companies too big? I think so. For example, Electronic Arts. This company own about every sports license under the sun. What happens if they decide to stick primarily to one platform like Sony or Microsoft? Will another company buy the licenses to sports to create game for them as well? What will happen to platform that does not have EA working with them? Will they be forced out of the race? I know a couple people who only bought their PS3 because of Madden. Do I see this predicament happening? No. But what if it did?
Another example of a company to big is Rock Star. I do realize there are different sections of Rock star, like North, or Leads, but still I find a lot of glitches in their games. How many times have you been racing on Midnight Club and fallen the street, and gotten stuck? It has happen to me quite a lot. Or how many videos are there on YouTube of Niko falling from some extreme highet and living? I like Insomniacs if you look at any more my ratings, insomniac games rate really highly, and they are a small company. How many glitches are present in their games compared to Rock Stars? I am not saying Insomniacs games’ are perfect, not by far, but still the small company wins out in my mind.