I work both in the US and in argentina, but I get paid in dollars.
the assumption that all expats work in the local economy is not a very provable one- if you look at just the people who comment here regularly, I would guess maybe a quarter of them work in the argentine job market.
Some are retired- quite a few, actually, who post here get checks in the mail from their home countries.
Some moved here to be with spouses who work here and support them.
Some work online, Some travel from here, some work on jobs that allow them to be here part time, like me.
Many of the mid 2000's crop of kids who were so populous didnt really "work"- they skated, from cheap place to cheap place, prague to sayulita to phuket to berlin squats to detroit to the lower east side to new orleans, maybe pulling a few shifts in the black economy, getting money from home, and so on.
I know at least a half dozen people, just off the top of my head, like me- they are in Buenos Aires because they like it, and its cheaper than their home country cost of living. They all make their living from a mix of sources, sometimes in argentina, mostly not. They are all in it for the long haul- most of them I have known since 2007 or so. They are "expats" but they are not like the lovesick puppies who follow a pretty face here because they fell in love without the slightest idea of their destination. Instead, they are older adults who have travelled all over the globe, and CHOSE Buenos Aires.
If we dont count in your book, too bad- we are here, have been here, and will be here.
I also know a fair amount of immigrants, expats if you will, to BA, who DO work here- and none post on this blog. They are too busy working to complain about the lack of marmite.
They run record labels, write books, make art, run restaurants, design and sell clothing, furniture, and architecture, play in bands, and many other things- in fact, I know far more of those expats than the type that mostly posts here. They have assimilated, hired employees, and thrive here, but they are absolutely expats, in the sense that they are from somewhere else, and, mostly still retain foreign citizenship.
Again, they CHOSE Argentina.