This is the inevitable consequence of the bonus-chasing tactics Oracle sales teams have followed since their incentive plan switched to massively focus on Cloud sales.
"Hi Oracle, could I get a quote for.." on anything on-premise resulted in a response that largely can be summarized as "$$$$$, or you can have it for $ if you also take cloud service X"
As a customer it's a no-brainer: Grab the stupidly massive discount on the product you want, agree to buy and use Service X, and choose not to renew a year in.
It'll be nice if Oracle can start treating their customers as people they'd like to do business with, not a source of sales bonuses.