FTS,
When living in the home place has nothing left but drudgery then the young do leave in every country. It happens here as someone pointed out above.
A troubling matter for land use is that the traditional use of land by indigenous people may not be documented and the government or corporations can take it over "legally". This of course happened in the U.S. and it is hardly ever even given a thought.
The land never can return to the sons and daughters of those who live on the flanks of hills and rivers.
Money will rule mens lives. Not the earth, the wind, water, and sun.
And we are able as you have mentioned to lift the burdens off each other's backs with simple inventions--but again as you said: there's no money in it.
But, in time, money won't give us the earth,water, and air that we sold away.
We do have to value the ones who have lived close to the earth without title to it--they have some natural entitlement, don't they?