I don't really see a point of those type of people trying to use Bitcoin to purchase whatever they want since they're already rich. Bitcoin does not have any weight to it when showing somebody the amount of coins they would have, if they show how many paper money that they have then people will get jealous and is more than likely to be controlled by the holder.
It's true, they do not even need bitcoin or to use bitcoin, because they are already rich and have several businesses even before bitcoin exists. Maybe they can built their own coins if they wanted to or a campaigns or whatsoever. The point is bitcoin is nothing compared to their real money and business.