O'Tink, my plodding computer is unable to open your link, but as you know the topic is of much interest to me! I am most familiar with healthcare outrageous costs, as that was my own profession and I ran into the "paywall" that always took precedence over health, at least in the later years. But yes, I think healthcare is a huge avenue for transfer of wealth upwards.
As far as finances, have you seen all the current brouhaha over the Paradise Papers? The article I saw made a big deal out of nailing Queen Elizabeth II, because she has $12 million invested offshore, the Cayman Islands and the Bahamas. And one example there is a rent-to-own company "that gouges poor people with sky-high interest rates."
Reminds me of Upton Sinclair, selling shacks to meat-packing employees and then forcing them out, just to re-sell to another family, in his 1906 novel THE JUNGLE? And it's all perfectly legal...here is a quote from the above article..."Offshore funds are often used to escape high taxes and their use is not necessarily illegal, though when they are being used by the same people who set those tax rates, it tends to raise eyebrows."
Over-simplifying you could say all those practices led to the Great Depression, finally mobs out in the streets until FDR convinced the wealthy to go along with the New Deal, thereby saving capitalism - but now we seem to just dismantle the New Deal and do the same stuff all over again?
(Sigh) ... long answer...