Looks like the TL;DR of this article is: "Corporate leadership, being so much smarter than the rest of us dummies, sees something big on the horizon coming. They're saving all their cash so they can later invest because "the next transformative innovation could be just around the corner". Apparently they're smart enough to hoard all this cash, but not smart enough to know exactly what that transformative innovation is so they can get started on it right now.
Let me propose an alternate theory: They're no smarter than the rest of us, and NOBODY knows what to invest in anymore. Corporate leadership is uncreative and can't think of anything else to do with that money that will produce returns in excess of what they're already doing. Shareholders don't want the money back (they'll just turn around and invest it into another company that already has a pile of cash). And they sure as shit won't throw a bone to employees (whose wages have been stagnant for a decade). So, what are they going to do with it all? Who knows? Let it sit in a bank account!
Let me propose an alternate theory: They're no smarter than the rest of us, and NOBODY knows what to invest in anymore. Corporate leadership is uncreative and can't think of anything else to do with that money that will produce returns in excess of what they're already doing. Shareholders don't want the money back (they'll just turn around and invest it into another company that already has a pile of cash). And they sure as shit won't throw a bone to employees (whose wages have been stagnant for a decade). So, what are they going to do with it all? Who knows? Let it sit in a bank account!