Some would argue that those that made the trip to the World Cup are the elites from D.F. (Districto Federal - Mexico City). Those are the types that get all the wealth, probably politicians and they leave the country in the financial situation you mention. They have full time bodyguards to thwart kidnappings. They eat three squares a day unlike most.
Some would argue that Northern Mexico is practically abandoned... they would say it's a disgrace.
Mexico truly is a third world country. They have very very wealthy people there, and the peasant class who are coming here. They are happy to let these folks go. More money in their pockets that isn't going to social services.
I knew some really rich Mexican citizens in Los Angeles. They were globe trotters, fluent in multiple languages, and just absolutely loaded. They would fly to watch the National Team playing, and I am sure they are in Germany.