Not exactly academic research, but this has been known since biblical times.. https://en.wikipedia.org/wiki/The_rich_get_richer_and_the_poor_get_poorer https:/

Not exactly academic research, but this has been known since biblical times.. https://en.wikipedia.org/wiki/The_rich_get_richer_and_the_poor_get_poorer https://en.wikipedia.org/wiki/The_rich_get_richer_and_the_po... It seems to be built into the world.