Pray tell what you think they should do with it? Hire 70,000 engineers for ten years? Start an airline? Buy Wyoming?
Before Steve Jobs took over they were doing what you think they should do--supporting every futuristic project that caught some executive's fancy. Spoiler alert: this was a bad strategy. Wasting excess cash is a common anti-pattern for big companies, such that it's a positive sign when they don't spend money.