The same thing that happened to those war torn Somalis - the bored effete moved on to something else that caught their fancy.
Preserving the natural areas of any country is an effort that I fully stand by. Left unchecked, it doesn't take land developers and their greedy black hearts long to completely denude the land - replacing it with plastic, concrete, and bio-engineered crops. So people, wrong-headed to be sure, call out to buy that unclaimed land so as to set it aside for nature. That isn't the solution, never will be, and plays right into the hands of those who stand to make a profit from it. The solution to checking uncontrolled land development lies in having the authorities step in and set that land aside for national parks, wilderness areas, and the like. By doing it this way, those who make profits from land speculation are forced from the business instead of grabbing land like some punk buying domain names on the web in the hopes of blackmailing some future star. It also sets the tone for that land - by having the government set it aside the action tells the populace that this land is special and needs to be cared for. By having out of towners buy it up in the hopes of keeping it pristine - you have the locals crying "Great, a bunch of hippies stealing my land so that they can grow pot in the jungle and let the local peasants starve!"
Unfortunately policies like this take a government that gives two shits about the environment to begin with - Roosevelt is surely rolling in his grave over the treatment of his national parks.
Arable land is the biggest single challenge that this world faces. People laugh at Soylent Green and that hackneyed ending it had - but as social commentary it is far deeper than it might appear.