Most of the hipster microgreen crowd aren't even making their money that way, they are making it by scamming other hipsters into trying to do that by acting like anyone can make hundreds of thousands of dollars a year selling $10/pound lettuce to hipster restaurants. There's obviously a very limited number of restaurants in the "overcharge people for local food" market to sell to. But you don't need to do that crap. You can sell normal vegetables for a normal price to normal people and make a perfectly reasonable living.

>Once enough people do this, the prices fall and you're just another farmer, scraping by.

The reason most farms are "scraping by" is the same reason most restaurants fail, and most programmers can't handle fizzbuzz. Most people are simply incompetent, regardless of their occupation. Every farmer I see complaining about money is wasting hundreds of thousands of dollars. Most of them are driving around in $80,000 pickup trucks while complaining about how poor they are.

>Being outside is nice, but there's a reason the kids doing this grew up in suburbs and cities: they have no idea what agriculture really involves when you have to achieve economies of scale to make it remotely profitable.

You don't have to achieve economies of scale to be remotely profitable. Not every farm has to be a corn+soybean rotation.