This is such a brain dead argument, but I will reply you so that others reading in the comment chain don't fall for this.

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Oil prices, even after russian discount are currently higher than pre pandemic levels. Even if it was, decreasing your fuel bills doesn't make a shipping mogul add billions to his wealth.

If access to cheap russian oil is the reason, (which is not the case ) why aren't all shipping companies becoming rich, most of them situated in china and europe. ?

The real reason adani is suddenly so much richer is because he is deeply over leveraged (taking loans) to run his businesses. He has links to current govt leaders and there is (IMO) crony capitalism/corruption involved