5 ideas
The savings only became global once ports, cranes, railways, labor agreements and box sizes were standardized around the container over the following decades. This makes the case that a simple object transforms trade only when an entire system is rebuilt to fit it.
Electric motors were available from the 1880s, yet US factories saw little productivity gain for roughly forty years because owners simply swapped the dynamo in for the central steam engine and kept the old shaft-driven layout. Gains arrived only when factories were redesigned around small distributed motors, with single-story floor plans, workflow ordered by process, and more autonomous workers. A general-purpose technology pays off only after complementary changes in organization, and those changes take a generation.
Before the gramophone, a singer's audience was limited to whoever could fit in a hall, so many mediocre local performers could earn a living. Once performances could be copied at near-zero cost, listeners everywhere could hear the very best, so income concentrated on a few stars while the second-tier majority lost out. Any technology that lets one producer serve an unlimited market converts small differences in quality into huge differences in reward.
The barcode looked like a neutral efficiency tool, but scanners and computerized inventory systems were expensive fixed investments that paid off only across high sales volume. Large chains could afford them and use the resulting data for logistics and pricing, which tilted retail toward big-box stores such as Walmart and away from small shops. To see a technology's economic effect, ask whose scale lets it spread the upfront cost.
The iPhone's core components, including the internet, GPS, touchscreen technology, lithium-ion batteries and cellular networks, grew out of government-funded research, much of it military or public-lab work. Breakthrough consumer products often depend on patient public funding that gets little credit once the profits arrive.