Since we subsidize growing vegetables in the desert and abroad, the market for stuff like vegetables, dairy and meats is hyper-consolidates. There are viable farms on the fringes, but they cannot get capital to grow and cannot compete.
I grew up in an area of upstate NY that was a breadbasket at one time, with a rich, diverse agriculture market that is dead. If you're a baseball fan and drive to Cooperstown on US Route 20, you can see the communities that you drive through rot away a little more every year.
In my town, 12 dairy farms operated in the late 90s (down from 30+ in the 60s). One remains today. Across New York, 60-70% of remaining farms will be bankrupt in the next couple of year.
The farm I worked on as a teen was about 750 acres and operated continuously and profitably since an ancestor received a land grant from the Dutch colonial government in the 1600s. Today, they were forced to be hobby farmers -- they board horses and hay to pay the property taxes and work elsewhere. (Due to limited water table, they can't subdivide the property enough to make enough money on the land)