Depending on the actual quantity, he might have a plausible "personal use" defence, even if the quantities are a bit larger than normal. It makes more sense that a billionaire addict (with well known legitimate source of wealth) would buy larger amounts in order to not have to run to his dealer every couple of days, than that he'd want to become a petty dealer himself. (I doubt many serious drug bosses would allow themselves to be caught with a big stash in their hotel rooms).
In that case, he should get a matching sentence.
Biting the hand that feeds IT
