I'd like another season of Fargo even though I felt this season was the weakest of the three (though I loved a lot of the individual characters - Nikki Swango, VM Varga, Gloria Burgle, and the re-appearance of Mr. Wrench). I do think the big picture here is exactly what you're getting at about the wealthy vs. the poor and how different their lives are. Another important theme is the idea of reality vs. perception - Varga really brings this point home in his final (we think) encounter with Gloria. Gloria reminds him that six people died and $200 million disappeared, and that those are facts. Varga counters that according to the official record, the case is closed and no one owes anyone anything. He says she's "arguing with reality." Also worth noting according to the IRS agent, Varga wasn't really doing anything illegal by tearing down Stussy's company so he and a few others profit, except that he wasn't paying taxes. Certainly, not everything was wrapped up in a nice neat bow like the previous two seasons, and I for one was hoping to see Nikki and Mr. Wrench make off with the money and live out their lives playing competitive bridge together.
Rolling Stone had a good (and very positive) review of the episode and ended with this, which I think is really appropriate:
About the title: You might remember that "Somebody to Love" was the Jefferson Airplane song that figures prominently in the Coen brothers' A Serious Man, a movie that ends on a moment of cruel irresolution. This season does something similar, as Varga insists he's minutes away from being freed (at which point Gloria will "know [her] place in the world"), while Agent Burgle just smiles and stares at the door, waiting for him to be proven wrong. We leave the two of them there, facing each other in an endless staredown, never finding out what happens next.
Is there any truer representation of life in 2017 than this: stabilizing and destabilizing forces, deadlocked, each confident that they're about to crush the other? But while it would've been more uplifting to get a classic Fargo finish where simple decency unambiguously wins out, the way this season concludes is hardly devoid of hope. "Who can say what has occurred?" the ever-relativistic Varga asks Gloria. And in the end, on-screen and off, we're the ones left to throw down that final trump card on the table.