Once you get past $20k/yr GDP per capita, there's indeed limited additional benefit (there are diminishing returns). But if look at the scenarios for Middle Ea

Once you get past $20k/yr GDP per capita, there's indeed limited additional benefit (there are diminishing returns). But if look at the scenarios for Middle East and Africa, it would take roughly 10 years longer for the Green Road scenario to get to $20k/yr, compared to the Highway. https://ourworldindata.org/explorers/ipcc-scenarios?facet=none&Metric=GDP&Rate=Per+capita&Region=Middle+East+and+Africa https://ourworldindata.org/explorers/ipcc-scenarios?facet=no...