The poorest have tremendous support. US poverty line is at 80th percentile of world incomes, and welfare options ensure nobody has to live under that line. The ultra rich do a great deal (and got there) by making much affordable for lower incomes (Walmart, Amazon for high profile examples).

For that matter, world abject poverty has been largely eradicated. Increasing customer productivity (both individual and aggregate) increases customer buying power - favorable to capitalism.