I don't think WE should foot the bill for Argentinean development but I've very happy to accept the Argentineans and the Japanese in our league filling the international spots we currently have. The current number of internationals is good, they flavour and add depth to our provinces without taking spots away from many Aussie players that deserve them.
I think a more feasible resolution would be to get together with Japan and create a deal in which they play roughly same time period each year as Super Rugby, right now their season is way out of whack with the rest of the world.
From there, you create a deal with them limiting the amount of Aussies, Saffas, and Kiwis playing from them but encouraging the recruiting of Argentineans, Samoans, Fijians, and Tongans. They already have the spots for international players, it'd just be a case of investing them in a way that benefits everyone and not just 3rd tier or retiring Aussies/Kiwis.
This is the most logical system for growing our hemispheres rugby without any wacky infrastructure changes like asking us to foot Argenina's player salary bills or anything.
From there we watch our hemisphere's rugby thrive.