There's a company building a distributed grid exchange system so your neighbors could get a slight discount by buying your power as opposed to that of the electricity company, and you would make more than you would by selling to the electricity company. Currently piloting this idea across a couple places in Australia and SE Asia.
While I agree that 8 billion people performing tasks is technically "scale", in that there will be a significant output coming from the entire population, the crux of the idea return to scale is that fixed costs (time and training it takes to learn how to farm, equipment, and land- I'm probably missing a few components) will be amortized across an entire population of individuals, rather than accrued for each individual.
If one person specializes as a farmer, rather than the entire population, that individual will be able to produce a greater number of crops than if every individual spent a small portion of their time working on farming. I believe you are trying to state that large scale operations are not necessary in order to feed the human population in your statement against "only large scale operations have the potential," which I disagree with on the basis of lost economic efficiency.
While I am unaware of the parameters of how much food is necessary to feed the world, and how what proportion of this quantity can be produced by large scale farming as opposed to small scale farming, I can definitively say that large scale farming will produce more food overall than distributed small scale farming. Because we want to advance as a population and free up time and energy to do other things, as well as overproduce rather than underproduce food, it does not make sense to substitute a distributed small-scale model for a large scale model, due to the inherent efficiencies associated with scale and specialization. The price one must pay for those efficiencies is distribution, and I would argue that the gains created by return to scale outweigh the losses associated with distribution of food.
However, I must give you kudos for living on a small farm and raising your own crops; I think hands-on production and creation of value for oneself and one's community gives an enormous sense of pride and it feeds a psychological "sense of hunger" in a sustainable way.
https://powerledger.io/
Edit: I clarified a sentence.