The biggest problem is that in a few generations, there will be very few people who will even know how to farm.
You'd be surprised how may young people are getting back to the land so to speak. Many become market gardeners and/or supply local restaurants. They're mostly just outside the metro areas so they're feeding upper middle class people. Some use small tractors or walk behind tractors. Most use high tunnels to extend the growing season by 1-2 months on either end.
Closest place to me like that is a college town and they have three farmer's markets with one being pretty good sized and year round here in Missouri. Cold weather crops, mushrooms and meat are available year round.
I'm also seeing a lot of people putting in a garden for the first time or first time in years and I'm very rural.