Maybe that is one reason cornbread is so popular? The corn and beans combo to make the complete proteins?
I tried making a corn and bean chili one time and it was so awful that I could barely eat it. I went back to using ground meat in my chilli making. I do definitely have lots more beans than beef but I still have beef in my chili.
So I just stick to succotash, which is limas beans and corn. Those two taste really great together.