Your first, second and third sentences are exactly my point. Yes it's an option, although you and most countries are fairly far from it yet. It takes decisions

Your first, second and third sentences are exactly my point. Yes it's an option, although you and most countries are fairly far from it yet. It takes decisions, purpose and money. If I can use you as a proxy for Mexico, whatever is not known about this by the larger Mexican economy, and engineering and agriculture communities, can be learned from the smaller groups of knowledgeable people and spread. It's a hard problem, and whatever technologies are developed can lead to exportable products and services (both engineering and agricultural). Yes, you have big deserts next to the sea, and you probably want to keep them deserts, if for no other reason than human transformation of large ecologies sometimes doesn't work out. So advanced, Mexican developed hothouse technology, enabled by desalinated and pumped water, gives you a place for Mexicans to migrate to in-country, without having to smuggle themselves across the border to die in an American or Mexican desert. All those Mexican citizens currently working for American agriculture, sending some money home but spending money in America for daily living, could instead be spending that money in Mexico. All that money earned would be feeding the Mexican economy, in addition to the national income earned from exporting agricultural products. Imagine if the safest food that Americans (and Mexicans) eat came from rigorously clean and high technology Mexican hothouses.