there is an English proverb:
"Birds of the same feather flock together".
Those who stay in CCR, as in traditional D9,D10,D11 are a certain kind.
Those who stay in OCR, are another kind.
As to the whole of Singapore being CCR because of connectivity etc, then perhaps the Chief Valuer is correct to value all of Singapore to have the potential to be Raffles Place
watch out, HDB flats are going to increase again!
there is another English proverb:
"One swallow doesn't make a summer".
Just because an eccentric rich stay in OCR or suburb, doesn't make OCR the same as CCR.
Yes, you don't call a rich person with unsound mind crazy, the proper term is eccentric. The proper term for poor person with unsound mind is crazy or lunatic.