To what extent can improvements in productive flow and product quality lead to an increase in sales and profit?

The 19th century industrial revolution, characterized mostly by an intensification of human and economic flows and major technological progress led to major disruptions on both the industrial and social spheres. These gave a trigger to improvements in industrial techniques such as productive flow, mainly represented by H.Ford. The emergence of new competitors (the BRICA countries) as well as new consumer expectations in the 70's also modified industrial objectives and practices, with quality being one of entrepreneurs' main goals.