How do you want to store the grain if you don't elevate it?

It won't go to the top of the pile itself, and if you insert new grain at the bottom of the pile, you have to elevate the existing pile anyway.

You could store it in a big hole in the ground, but then you'd have to elevate it to get it out. And it would be much more difficult to keep it dry. It would turn into beer before you could use it.

> then you'd have to elevate it to get it out.

> It would turn into beer

I'm confused - are you suggesting reasons you should use a big hole in the ground or reasons you shouldn't use a big hole in the ground?

It won't be good beer, let's put it that way.

In the midwest (U.S.), grain elevators are the big cement silo looking things you see in movies set in Iowa or Kansas. Really, elevators are synonymous with ag cooperative businesses. Grain storage is a primary function of these businesses. In the fall (harvest), they get really busy, and I worked as a seasonal employee. Long hours, dirty work, but the pay was not bad with all the overtime.

If you want to store grain in a really big bucket (like a grain silo), how are you going to fill that bucket?

No need to downvote, this sounds like someone is just curious and willing to learn.