As said above, it can be a sweet life in South America flying for the National carrier: Language, climate, licenses, family, etc., it is all pretty damn comfy.
Compare that to pulling stakes to work for some Mickey Mouse contract agency clear across the planet, with more un-knowns than Mars.
We as pilots moved around to do ex-pat work when unemployed or desperate, not because we had a burning desire to do so.
As other stated, Venezuela is pretty much tits-up now, but half their pilots are flying cargo in Miami and the other half may be desperate enough to jump on some scene in SE Asia, if the pay is good and expenses covered for interview, sim evaluation, hotels, travel, etc. even if they don't get selected.
Lots of horror stories out there..
If I was in Chile or Colombia flying jets for a living, I would stay and do just that.