I'm not sure about BIG AG...but here in our area of Michigan I can see some farmers that have not been doing the monocropping or purchasing the big equipment..they still do things like normal people..they have a few hundered acres..but they plant it with people planting not machines..they allowed "weeds" and fertilize with organics, they pick their produce nightly and
sell it daily at farmers markets..or to restaurants, etc.
some sell to canneries and such, but yes, the bigger they get the more money they do tend to put into the machinery and going into debt.
i know i much prefer to buy my food from the first guy, the guy that works hard planting and harvesting daily and not using the chemicals..and even though i can grow some of that food myself..i'll buy from him cause I know i need to keep him in business for the health of our nation