> prosperity for whom? The answer for the past 50 years has certainly not been “everyone” or even “most people” in wealthy countries like America.

The poorest state in America, Mississippi, is richer than most of the world [1][2]. (No. 19, between the U.K. and New Zealand.) The post-war era experienced the largest and most broad-based increase in material prosperity in human history. Our poorest Americans saw real economic gains rivaling multi-generational ones for Rome's richest. If there is something that will kill us, it's ahistorical nihilism.

[1] https://en.wikipedia.org/wiki/List_of_U.S._states_and_territ...

[2] https://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nomi...

Not all roads are paved, but everyone who accesses learning content on the internet is a beneficiary. Anyone who accesses youtube to learn a new skill is a beneficiary. The development of the train, a British technology I know, allowed the movement of massive freights for pennies compared to automobile traffic. That cost of transport allows food costs to be as low as they are in places that use trains. Which is everywhere. Technology facilitates the costs we have for subsistence.