Although I agree with your post in general terms, I want to highlight is not great content gets seeded, its popular content. There is a diference. Specially since great old content decreases in popularity.
I've heard that popular content gets lots of leaches, but they don't seed for long. They delete the file once they've watched it, because it just wasn't that good.
Good content gets a lot of seeders, because they keep it for longer.
