It'd be helpful for ~nxb to be specific about which country cultures have this problem. But of all the people you know who don't think this way, how many are representative examples of a (non-US) national culture? (And if you know them well enough to judge this, are they perhaps outliers who left another culture?)

The US – and perhaps especially (your home) Texas or more generally the US west – is relatively open to the idea of excellence coming from anyone and in arbitrary combinations, compared to many other more fatalistic/hierarchical/caste-oriented cultures.

It's a region-level culture I'm talking about. In this case, I was thinking of Eastern Europe culture.

You're in for a MASSIVE culture shock, if you ever get employed there. For this, and many other reasons. The cultural expectations in business are often the far opposite of that of the US.

Don't forget that individuals and group culture are two distinct things, but both are very real things. Let's be clear about which one of those we're talking about.