Jeff,
It was a bit of a rant, but this is a sore point with me. It's a huge country with tons of culinary variety, both in ingredients and kinds of cooking (as opposed to say, Chile, which frustrated me when I was there because it was all these impeccable ingredients in search of a cuisine, or something more than a few typical dishes:-)
FWIW, the Wal-Marts in Brasil are probably packed too. When I lived there, I lived in Southern Brasil (not Rio Grande do Sul, however) where the predominant ethnicities were Italian and German. I have not found (though it may have changed). Notwithstanding the similarity of those influences to the Argentine experience, I found that people ate a Brasilian-style diet, i.e. a plate of rice and beans garnished with small helpings of other foods. Italian came in with the addition of risotto or macarao (macaroni) to the rice and beans, not in the addition of more meat (as in Argentina).
Again, it's a sore point with me, and to see the level of enthusiasm for them here, when it is impossible to find a moqueca, a vatapa, a caruru, quiabada, any of the small street foods, the simple fish and seafood preparations, etc......the mind boggles.
And we rankle when people in other parts of the world think of us as a McDonald's (or perhaps Ponderosa would be a more apt comparison in this case) nation:-)
Hopefully this will be my last rant on the topic, but I can't promise:-)