Polished and Unpolished Rice

When I was a young girl, I used to listen to stories of how the poor lived their life. They had to walk for miles to go from one place to the other place. The poor had to eat what was not liked by the rich such as unpolished rice. The unpolished rice to the wealthy was inedible it because it was dark in colour, hard to swallow, took a long time to cook and many more other reasons. For the very same reason, the wealthy were always overweight while the poor were always stick thin. People then thought they were undernourished.

Look at this nutritional facts:
UNPOLISHED RICE (Weight: 165g)
Energy: 985KJ
Proteins: 4.3g
Fats: 1.8g
Carbohydrates: 53.0g
Fibre: 2.5g
Calcium: 7mg
Iron: 0.8mg
Vitamin B1: 0.23mg
Vitamin B2: 0.23mg
Vitamin B3: 3.1mg

POLISHED RICE (Weight: 165g)
Energy: 861KJ
Proteins: 3.6g
Fats: 0.5g
Carbohydrates: 48.8g
Fibre: 1.3g
Calcium: 2mg
Iron: 0.3mg
Vitamin B1: 0.02mg
Vitamin B2: 0.02mg
Vitamin B3: 1.3mg

So now in this advanced world, more and more people are swapping their white fine fragrant rice to this dark unpolished rice due to its high level of 'good stuffs'. And again, only the wealthy can afford to consume it due to its high price tag. I do not understand why the less work / effort they put in processing this unpolished rice can be more expensive than the polished rice which obviously need more work?