As far as profit from small scale farming, I guess it depends what's termed "profit", and also where you're at, and who's the clientele. I live in an upscale exurb area, and we're close enough to Chicago where the locals here like terms like "farm fresh" "free range", and "organic", but don't feel inclined to venture to far for all that. My property is on a hill going down to wetland, not suited for crops, but great for water fowl. So I raise ducks, I love their eggs, I sell their eggs, people buy their eggs. That pays for feed, beer, etc. Not much beyond that. We've also done piggies here before, but just for ourselves.
My neighbors down the road had way more going on, would raise goats and sheep, some pigs, and a bunch of various fowl. They got sick of all the work w/o having much to show for it. Just not enough profit doing it on a small scale. For me with the ducks, it's just supereasy, I don't work too hard at it, and most importantly I enjoy it.