Like profit (measured only as money left after expenses), productivity is not the only important measure. What is traded for productivity? Who gains from prod

Like profit (measured only as money left after expenses), productivity is not the only important measure. What is traded for productivity? Who gains from productivity increases? It would certainly appear that over the last 30 years in the US, most of the productivity gains have gone to a relative few people - certainly not uniformly distributed amongst the people who created most of that productivity.