I cannot imagine any business leader crunching the numbers and concluding it's better to stay with Oracle. I would order an all-hands-on-deck effort to rejigger the company database needs to get out from under these parasites.
Only explanation I got it that they are unwilling to stall current projects and/or hire more backend devs while sorting it out. And yes, I am well aware it's a monstrous task, even for a small company.