I believe it's about 50/50 Spanish/Catalan in Barcelona.
Either way though, they don't speak the same language as the people who want to know what they are doing different.
In the US Spanish speakers tend to be poor and thus not in position to do anything about costs if they did look into it.
We might be able to learn from the Chinese or Russians. I'm not sure what their cost structures are like. Learning best practices from high cost areas won't help you control costs, which rules out all English speaking countries.
I forgot about this joke yesterday, but it is a better reply than my previous ones.