I believe some major shared concerns in our time can be resolved through parallelism, or allowing independent development to take place around the world. Apply a non-interference pact similar to the Prime Directive from Star Trek fiction.
* urban sprawl
* extreme income disparity
* loss of languages and cultures
* habitat loss
* resource depletion
What we have instead is the reverse: we insist, as a universal moral imperitive, that everyone, everywhere, has to be brought into an affluent North American lifestyle. The past after all, as the implied narrative informs us, was composed of 100% Pure Horror, Ignorance, and Inhumanity.
If the United States alone uses the majority of the planet's resources, but has only 6% of the world's population, our moral imperitive to upgrade 5 billion lifestyles, barring significant required technological advancements, is mathematically impossible and will remain so for the foreseeable future.
Not every group is ready to responsibly, consistently maintain and advance a modern state of living. For some, their best fit for the long-term yet is hunter-gather, for others, perhaps something resembling Late Antiquity or the Middle Ages. Yet, this is unequal, and in some ways inhumane, but it is the only realistic resolution available within our finite space.