I would think that a lot of that shift happens due to general consumerism. The more you earn, the more you tend to spend. With a lot of the top-end restaurants

I would think that a lot of that shift happens due to general consumerism. The more you earn, the more you tend to spend. With a lot of the top-end restaurants still being heavily skewed toward meat-based dishes, people that normally would be eating a lot of canned beans, pastas, rice, and such are now consuming meat in larger quantities. There is definitely an air of "you made it" around meat-based dishes.