It definitely depends on the server. Many servers you have to sell as much as you can, and often log in to more than $2B but that involves bots. I presume you're asking for primary though - maybe I'll give CI a go there, I would say the destock is notably different from 1a, including which bonuses you get.
For the high land, high NW though, I definitely stocked billions of bushels to afford to run turns deep into the negative. Even then corruption costs were larger than the expenses, though I did buy out my PM for the last 40 hours. Here's the finish for my 1.4995 B NW on 1a where you can see I bought about half of the final military, but mostly produced jets at the end:
https://earthempires.com/alliance/86/ranks/438