Some of those pictures have something to do with price. There was a time in this country that flying was very expensive. Most people took the bus or the train or drove. Those who did fly tended to dress better because it was a higher class experience.
A lot of it too simply has to do with fashion trends. There was a time when dressing like that was simply the in fashion.
I don't know that it has anything to do with profits or productivity. Because people now wear jeans and t-shirts is not why companies are moving offshore. People aren't lazy because of the clothes they wear, they are lazy because of how they were raised.
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