While all large farms are family farms as well, the total number of such large farms is, what, 10,000 in the USA? By a bunch of very rich people? The exact people who don't need their lifestyle subsidized by people in urban areas to keep living in the country otherwise they'll move away and stop growing our food.
And they’re all stupidly wealthy for the amount of work they do, but that’s another matter.
Note: that’s all for crops. Raising animals seems to be another matter with plenty of smaller farms - and they do more work too.