I don’t think that’s anything to do with cuisine, but rather the vast difference in standard of living between where we live and most of India. Same is true of Mexico and many other places. Their limited resources likely going into obtaining something edible, rather than selecting from the highest quality options available and paying for refrigerated storage.

Ofc we also have highly regulated industries of food production, transportation, and consumption, where licensing a restaurant typically involves meeting numerous requirements on safety and cleanliness. But that doesn’t come cheap.