Earlier quoted context omitted.
They have, which is why they only have $160B in net cash. They will do more when allowed to repatriate it at a reasonable tax rate.
Yeah, how can you do anything just that little amount? /s The could give their shareholders billions and still have plenty left over to do anything.
They've paid shareholders close to $100B and will pay more. But their hands are tied on most of the money until congress passes a tax holiday.