READER POLL: The Kosmont-Rose Institute Cost of Doing Business Survey came out last week, saying for the first time more than half of all cities in L.A. County are “high cost” or “very high cost” places to do business. How concerned are you about that? Moderately. Costs are high but L.A.’s doing OK.25% Very. This is unsustainable.58% Not much. Businesses keep expanding.16%