In unequal societies, researchers said, "collapse is difficult to avoid.... Elites grow and consume too much, resulting in a famine among Commoners that eventually causes the collapse of society."
Is our society really susceptible to a famine? I doubt many of us think this is a possibility; after all, the grocery store is always stocked. But I see two scenarios in which it's possible:
1) Food production and/or distribution is disrupted due to climate change or global conflict.
2) The "famine" is not for want of food, but for want of opportunity which is denied to the Commoners. Economic inequality leads to widespread protests, which results in societal collapse.
The onus is on the Elites to keep justice in mind, preserve as much ecological order as possible, and to give back to communities in whatever way possible.