“The Great Depression (1929–1939) was an economic shock that impacted most countries across the world. […] Devastating effects were seen in both rich and poor countries with falling personal income, prices, tax revenues, and profits.”
(https://en.wikipedia.org/wiki/Great_Depression)
Maybe people in rich countries can learn to subsist on that much. Combined with the feudalism model that I have elsewhere in this thread promulgrated, this will define the living conditions of the 99 percent as we approach the singularity.
Here's two data points for you, minimum wage in Zambia is 13 USD per month, in India it's 65 USD per month.