You (as well as this article, though less so) are conflating wealth and income. Wealth is a stock; income is a flow. In any economy what is produced is split

You (as well as this article, though less so) are conflating wealth and income. Wealth is a stock; income is a flow. In any economy what is produced is split between wages and profits. Wages are the returns to labor, while profits are the return to capital. Income to households can be both returns on wealth or returns on labor, so clearly higher income will be correlated with higher wealth, and wealth inequality can be both cause and effect of income in equality. What the Oxfam article fails to mention, is that quality of life and income have improved DRAMATICALLY for billions of people over the past 50 years, and ironically what is standing in way of the bottom 50% are often legal and cultural obstacles to accumulating capital -- wealth -- at both the individual and national level.