They got it in stock, not cash.
Really folk, let's keep things in perspective. That $80 billion is:
(1) For a global company keeping a global company going--$80 billion may seem like a huge amount--but how much would you need to run such a company globally? It not so excessive if the company has to maintain stores and such around the world.
(2) Not in cash--You seem to think Apple has a vault underneath the campus with pyramids of money. REMEMBER when someone says that a company is worth $80 Billion, that's really what it's valued now mostly in stocks and assets, nothing liquid to give away. A lot of that $80 Billion is land and stores and equipment, etc. And as for the part that is stock--that value can drop tomorrow. Look at any stock market crash. Companies valued in millions or billions one day can be worth nothing the next. Like Jobs those Executives are millionaires because of what their stock is worth, not because they have millions of dollars stuffed in their mattresses.
(3) No one person owns that 80 Billion. So, how is Apple's Chairman supposed to say to anyone--executives, stockholders, etc.--"We've decided to give this amount of your millions away to charity...."
That Apple is worth $80 billion doesn't mean that Tim Cook has a bank with $80 billion in it and can write checks giving away that money. That money doesn't belong to him. It belongs to the company. It's not his to give away to charity, it's not any one person's to give away to charity. Which is to say, if $1 Billion is going to be given away--to what charity?--Tim Cook, alone, doesn't get to decide. Steve Jobs wouldn't have been allowed to decide. Likely the stockholders would all have to decide. And where will that $1 billion come from if they don't have liquid assets? Will the stockholders give up their stock? Will the employees give up their paychecks? Will the company not make upgrades or repairs or maintain the infrastructure? What parts of the world will they take this money away from?
It seems really easy until you think about it. Who is going to make this decision, how is he going to get everyone to agree to it, and exactly where is that money going to come from and go to?
A Bill Gates with can sell a house or stocks or liquidate assets and give what he wants to whom he wants. But Microsoft can't do that so easily. Let's keep the reality of who this money belongs to, and in what form it is, before we take Apple to task for not being more charitable.