They could clash, or they could treat it as a Star Trek post scarcity utopia. When everyone can have a whole Earth's worth of resources, what's left to fight over. A ruling class starts getting uppity about controlling people to inhumane ends, and you just step 100 Earths widdershins and find yourself a nice Edenic forest, untouched, undeveloped, where you're free to forage and hunt and fish to your heart's content. Live like a real human again.