If producers are able to totally game a commodity market and control prices so completely than you have bigger problems than just poverty.

And yea, we do. If we had UBI tomorrow and people wanted more apples because they could afford more fresh fruit the apple cartels of today would collude prices up and use regulatory capture to block competition from entering the market to supply the elevated demand for apples.

But thats basically saying "hey, you want a government in your interest, you should probably get to a democracy first". If businesses control the legislature you don't have a democracy to begin with and should probably get that first before talking about... pretty much anything else. Because any other conversation is eminently pointless if you aren't influential upon your government.