This is nonsense. The exports to the first world come at the expense of social needs in the exporting countries. Somoza threw peasants off the land so he and his cronies could start cattle ranches under the protective auspices of the Alliance for Progress. This period actually saw simultaneously the most rapid increase in Nicaraguan GDP in the century and the immiseration of the bulk of the population. The elite vacations took place not because the Somozas were scum like the Duvaliers, Marcoses, etc, but because the reward system of capitalism makes this a natural corollary. The notion of an enlightened bourgeoisie in Latin America is absurd.
Louis Proyect
(http://www.panix.com/~lnp3/marxism.html)