"Market efficiencies and/or better engineering" are often enabled by technological breakthroughs. Consider the efficiencies generated by Amazon's highly automa

"Market efficiencies and/or better engineering" are often enabled by technological breakthroughs. Consider the efficiencies generated by Amazon's highly automated warehouses; their level of automation wouldn't have been feasible in, say, the 60's. Substantial technological progress on multiple fronts has been required.