how the wealthier got that way

I want to get back to this article, whose friskiness-cum-substance appeals to me, but whose length is too long at the moment:

Every January, to coincide with the World Economic Forum in Davos, Oxfam tells us how much richer the world’s richest people have got. In 2016, their report showed that the wealthiest 62 individuals owned the same amount as the bottom half of the world’s population. This year, that number had dropped to 42: three-and-half-dozen people with as much stuff as three-and-a-half billion.
This yearly ritual has become part of the news cycle, and the inequality it exposes has ceased to shock us. The very rich getting very much richer is now part of life, like the procession of the seasons. But we should be extremely concerned: their increased wealth gives them ever-greater control of our politics and of our media. Countries that were once democracies are becoming plutocracies; plutocracies are becoming oligarchies; oligarchies are becoming kleptocracies.