Willy, billionaires don't look at investments like this one the same way we do.  Billionaires probably don't think they are about to die either, lol.  He's also an accountant.  He will leave no bean behind!   So if waiting another handful of quarters will get him another 50% top-up on NPV, it will appear to be nothing of a wait for him.  And yes a 50% increase in NPV is a sinch if copper and gold 3-yr averages move up 25-30% from here.