Oh, I thought you were speaking of Russian Oligarchs in Russia...
Boris Boroshensky was a heavy hitter and basically controlled Yeltzin, along with others who scammed Russian people... Hated Putin with a passion like no other for booting him out....Revenge doesn't even cover the lengths he was willing to go to take Putin down....and others like him got on board. Some didn't because they knew Boris was over the top in his obsession with Putin, and told him so.
Borishensky loved playing on Putin's doorstep (Ukraine), set up a foundation in Kiev to funnel revenues through....supported candidates who;d oppose Putins favored candidates...and the war was on. Boris spent mass revenues in Kiev and other places to oppose Putin. It's quite a story , in the end he tried to sue one of Putins Oligarch's and lost. By then he had lost much of his wealth and with it couldn't play in their park anymore. He hung himself and though rumors of course flew, he really did hang himself. Was depressed for months after his losses.
At any rate....Boroshensky had connections everywhere...including the US and other European countries...wasn't much for him to get an audience with nobility and politicians.....and so did his friends...who unlike Boris keep a low profile..... They know who to see and who's playing the cards in Ukraine. It's not about the peoples desire for freedom now...they're simply what's shuffled the deck...and there's players from both sides of the ocean in this game now.....Poroshenko's our guy 'Oligarch' but he's a far cry from having control of Kiev Gov. at this point....that war is hot and heavier then the one in E. Ukraine now.. Poroshenko has to consolidate his people, and will now that Yats is gone and you can expect the rest of the Maidan people to 'resign' along the way....especially if they're unwilling to play the game.