A change in the distribution of income that leaves total income constant will not shift the market demand curve for a product providing January 1, 2023 by admin everyone has an income elasticity of demand of zero for the product. everyone has the same income elasticity of demand for the product. individuals have differing income elasticities for the product,but the average income elasticity for income gainers is equal to the average income elasticity for income losers. any of these conditions occur. See Answer any of these conditions occur.