Besides, if you are an extremely talented musician, it's not in videogames that you'll get widespread recognition nor the best salaries either. Can you name any of the musicians who worked on the games you mentioned, by memory ? Good try.
So of course, people who are talented tend to move to other industries.
Do movies have awful music in general, just because there are lots of shitty movies and movies with a music budget of at least $1000 represent .0001% of all movies?
That's a bit unfair. Movies tend to put the composer's name in big letters right before the movie starts, while in games the name usually comes "buried" in the credits only.
Also I personally find that the best soundtracks come from Japanese games, and I'm not very good at dealing with Japanese games.
And do you seriously expect me to list a significant fraction of all games to satisfy your needs? That's ridiculous.
Here's my claim: a significant fraction of the most popular games have excellent sound tracks. I provided evidence to back up my claims, you have provided none to back up yours.