Not every economic system, economic systems that place significant barriers against ballooning of individual wealth off exploitation see less disparity, and thus less of an impact of money on politics. Beaurocracy becomes a new kind of power currency, which is why much of the Politburo in the USSR was corrupt, though its worth noting that their disparity levels were lower than currently in the Russian Federation.
The Russian Federation’s “Oligarchs” are a spooky word for Capitalists that dodges the fact that they are Capitalists that took advantage of the collapse of the USSR to gain massive outsized power and wealth. The Russian Federation is Capitalist, not Socialist.