The masses of consumers use more resources than the small number of billionaires, but the billionaires are bad leaders, leading consumers to ecological doom.

We could remove the small number of billionaires, but the pollution causing outputs from the companies that they are invested in would still be demanded by the much larger number of consumers. The investments would just be transferred, so it's shuffling deckchairs. Mass consumption uses most of the resources.

Yes, I do think the billionaires have greater influence in society than ordinary individuals. They have been bad leaders. The whole value system, based too much on money versus other values in life, is corrupt.