That depends, if they can use their piles of cash to improve further their supply chain, innovate even more and push out competitors maybe it is still better spent on that. Also with that kind of cash they could start being very agressive with acquisitions.
Well at some point Google and Apple will both have so much cash on hand that either can consume the other in an 'all cash deal'. it will be an interesting benchmark to watch, the sum of their cash at the end of this quarter is $100B and climbing. GOOG's market cap is only 188B, so more than half way there :-)
