I can venture a guess: this is so that Larry Ellison can retain control of the company. He is Chairman & CTO, but since the CEOs are “Half CEOs” he is also virtual CEO. I’d add that this is a good thing. Larry is an amazing visionary, who wrote Oracle Parallel Server during the early days and is also good at marketing. Larry/Oracle sucks at user experience so their client products are terrible. A weird thing about Larry is that he invented cloud computing in the 90’s (he called it network computing) and yet Oracle is late to the cloud party.