Lack of support happens everywhere, and be sure that being in Europe is a great advantage!!
For southamericans, your first step is to go to Europe, and that alone requires a lot of money, just for being in same conditions that a begginer in Europe.
I guess that doing PWRC is a good option, if there are some other top competitors in it.
Latvala is confimed, Aigner (not top, I know) also, Pozzo, Ligato, Arai PG Andersson?
If we have good and many, recognized drivers there, WRC teams would be looking for drivers performances there.
Rowe was champon but of a shy field of GR N drivers.
It also brings trainning in WRC rallies.