"Ejido". Communal land granted to groups; it's the fundamental land use convention provided to Los Campesinos after the 1910 revolution. Note that I use the word "convention", since a communal plot in an ejido cannot be rented, sold, or mortgaged.
Which is another of the reasons why Mexico's fundamental laws have driven it into abject poverty: pinhead socialism married to 16th century oligarchy creating a corrupt dependocracy.
*whew* Got all that out. Read about it here: Ejido's Discussed
Can't remember where I heard it, but the question was posed what if all Americans were to move to Mexico, and all Mexicans were to relocate here, what would be the end result of the two countries? It was figured in about twenty years Mexicans would be flocking south instead of north in search of a better life.
Whatever it is they're doing wrong is going to be up to them to change. The link you posted was an excellent example of what's probably one of many.