That our current political state of play depends largely on the good graces of the hyper-monied elite is not something I'd take issue with.
That the relationship is directly analogous to Russia is not.
Trump's not going to jail Tom Steyer. Obama didn't put David Koch in a cage for a show trial and then exile him. We may be more in the thrall of the Mercers, Koches, Adelsons, Steyers, and Soroses than we'd like, but we're not an autocracy enforced by the state security services.
Whatever the wheezing weaknesses of our status quo, we still have a functioning party system with free and fair elections, an independent judiciary, and a free press that reflects a diversity of opinion.
Those things don't exist in Putin's Russia. Russian "oligarchs" today exist at the sufferance of the guy at the top. They are free to get richer and wield their power and influence only to the extent that it doesn't threaten Putin. Witness Prokhorov, Khodorkovsky, et. al. Witness Gusinsky and Berezovsky. Play ball and stay rich. Wander off the reservation and face the consequences.
One guy has been in power in Russia for 16 years. The oligarchs that play ball with him are fat and happy. The ones that don't are dispossessed, dead, or living overseas. The new crop of elites are joined at the hip to Putin. The old ones kiss the ring or pay the price. Is this something you'd dispute?
What oligarchs in Russia are anti-Putin?