I think that's a good question, march I.
Aside from that, the region has never abandoned policies that make the government the main employer, and also give it the most lucrative jobs. Mayors in some dinky towns in Argentina make the equivalent of $100,000 per year. Here in the US, mayors of towns that size would probably just receive a tiny stipend to cover their expenses.
This is a problem throughout Latin America, and it's one that they have been unwilling to confront. The move back to Socialism (which is really just oligarchy with a different set of players) is going to ensure that they are poor and stagnant for many, many decades hence.
Bingo...