And which CIO is going to bet his job on making that move successfully? When the ROI is 10+ years for a transition like that, you'll be laughed out of the room

And which CIO is going to bet his job on making that move successfully? When the ROI is 10+ years for a transition like that, you'll be laughed out of the room proposing it. If the executives can't show a net positive in less than 3 years, it's NOT HAPPENING. Migrating most large companies from Oracle to X would take more than 3 years of planning alone.