The premise here is very solid- shut down the small number of people that the Oligarchs depend on, and their ability to operate is curtailed much more effectively than trying to attack the oligarchs directly.
The challenge with it is that this doesn't generalize to any shared principle and it's cynical realpolitik dressed up as network science. I'd argue this paper is less a work of scholarship than an example of collusive, astroturfed, agitprop, where even though russia's oligarchs are an easy target because they are still new money and retain the taint of trade from the corruption that produced their fortunes, the autho…
Reality is that tax dodging is a wildly out of control problem, and worse it is considered to be de defacto standard to even run a business at all. From south Dakota to the city of London and beyond. It is really a problem