Edit: it was super cool to meet his cows but the market for 12$ yogurt is so small that it would he hard to break into that market. He only got there because his family has run a very natural dairy farm for decades (or at least that's what he told me).
So the real question isn't can someone produce yoghurt cheaper than this person (they can) but is the product they produce worth the $12 for enough people to make a go of it.
The real question is if you love doing it, can you support yourself...
Sure it was boring as a kid, but I got a lot of hands on training fixing machines and working with plants and animals. It was also much safer than the last 25 years that I've lived in Oakland.
I can see that I'm touching on a heated topic (Rural vs. Urban living) that people feel strongly about.
My original point is that there appears to be people willing to work on farms, but not the types of farms that build culture and invite communities to be a part of. So we are left with migrant workers which in this day in age are probably largely illegal.
I would assume that this is an untouched labor force and economic niche that is being underutilized.