From someone on the searching for land end, mid thirties with a family to feed, in Europe, caught in the ratrace mill of earn and spend by force of society ...
Everyone looks for the same features: water, land, closeness to infrastructure (schools, hospitals, shops, library, culture, closeness to people/market for produce to be sold). It is not that people do not like to live in small distant towns or out in the fields, it is that the infrastructure there is lacking. The only people who can "afford" to live there are people without kids, or whose kids have left the house. Why do young people, families, not go live in small towns and only old people end up there/stay?
By time the kids have left the house, people have set in their ways, their jobs, their neighbourhoods, their mortgages ... Their societal responsibilities, chosen years before. And while they always dreamt of living the good way, it would draw them away from closeness to friends, family, grandkids, etc. From emotions and feelings, from belonging with as many as possible other humans, which we've been trained at. So much so technology understands that market better then sustainable living does.
You have a kid that's brilliant at music, at dance, at math, at anything and as a "good" parent you are obliged to the potential and future of your kid (that is different from you) to be close to society. Every kid has something special, are you the parent that will not see to the best possibility of your child's development?
The families with kids we know who have chosen the self sustaining lifestyle, and to be able to afford it have moved further then bike-distance, have kids who long for being independently able to go out into the world with friends, go to a concert, a museum, a sports event, travel, etc. Not something you can do on a motorbike when you live 40 minutes by car away from "society" and go there maximum once a week for the "necessities" shopping. I remember being driven 40 minutes in the morning, and in the evening, just to go to a "better" school. So much boring, lost time.
We've never met anyone who drove more then 20 minutes to go to a u-pick, or a farmer market. We ourselves, living close tot he sea, drive once a week to the port to buy fresh fish, a 20 minute one-way drive. No one we know does that. When we tell people we do this so that we get the fish fresher and pay the fisherman direct, they consider us mad. After all, the supermarket has all-you-can-wish-for "fresh" fish that's been from the fishing boat to the auction, from the auction to the distributor, from the distributor shipped to a low salary place for processing, from the processing to the distribution centre, to the supermarket. Surely, everyone understands "you can't get fresher fish" ... We drive 20 minutes one-way, but we're the mad people.
CSA type ventures that are out of people's way need to organise picking, sorting and delivering of the goodies the land produce. If you live out of people's ways, try to compete with the organic labels mass produced and marketed. No one will pay your production cost. You'll be lucky if you earn more then the cost for you to drive your small-scale distant from society produce to society.
So, grow things close to society. Growing things close to "society" makes land "very expensive". As in, society is making the land expensive beyond any possibility of financial viability. After all, society makes people want to have a house and a garden, and so any land that is close enough is speculatively useful for building/living/industry.
It pains me, my grandparents have this piece of agricultural land, they keep it, do not want anyone to farm it, do not sell it. They wait, because it is close enough to society that within the next 10 years it will be built upon. So no one dare touch it, so it is immediately available as soon as city hall decides it can be built.
I've looked at so many financials of self sustainable, CSA, permaculture projects all around Europe. Unless you are famous (like the Holzer's, who I have great respect for the example they set for everyone) and get cash for consulting, and have some of the land from your ancestors or sufficiently cheap, it is impossible to send your kids to state paid university, or provide for braces, or ... whatever life needs or throws at you during that time in your life you're nurturing kids to adulthood.
And very often, when given/renting land, it only takes the owner a few letters to get you off the land for their well exploiting. You've put all the hard work in to plant trees, bushes, improve the soil, the fertility, the nature of the site, and then 3-4 years later when your first return could start trickling in from greens, you're thanked and can start again elsewhere. The bushes and fruit trees the land owner will benefit from ...
Lastly, the risk. When you're part of "society", you have "friends, family, society" that if anything happens to you can alleviate. When you're 40 minutes out, society invites people to the beach, the woods, concerts, ... but not to a u-pick or a self sustainable farm. Society will also not come to you if you're in unexpected need of help, and that 40 minutes will break you because in society you're never more then 15 minutes away from a structure that will provide assistance, but 40 minutes will not cater to you.
Ultimately, it is growing good, healthy, things we're going to put in people's mouths that is made unprofitable, risky, unnecessarily difficult while buying the last technological useless advance is made a dead easy must.
We'd love to find land in europe which we can live on, live from, earn from so we can send our kids to school not too far away, send them to uni, have comfort of medical and other support for the just in case... Alas, nowhere to be found. So we try to hold ourselves to industrially approved "organic" labels in our daily rat-race to earn cash and hopefully one day have enough to buy a piece of overly expensive land not too far away from society.
End of rant ...