I'm curious to learn why bass won't approach 10lbs as well? Is there a study or research paper available? By the way, not challenging what you said, truly am sincerely interested.
Not 10, but 8.5:

And 8.75:

Landed both in the same pond this past Autumn. Landed loads of other 4+ lbs largemouth same pond. Buddy landed 9.5 and the owner insists there are a few 10+. Met 2 folks who landed 10lbers. Given the sheer number of fat toads I've landed and personally seen others land in this pond, I don't doubt the owner at all regarding his statement there are multiple 10+ lbers.