This is a recurring pattern in history of "enterprise software" (for whatever it means) the fade of technologies and the high-cost of maintainability for those

This is a recurring pattern in history of "enterprise software" (for whatever it means) the fade of technologies and the high-cost of maintainability for those legacy systems. This is a common business model in the software (or hardware) sold to large corporation. Usually the customer wants just something that works for their business and don't always understand the implication on relying on their ancient systems. And by extension, those large corporation just paid (a lot) for maintaining the legacy system up and (somehow) running... As mentioned in another comment, this is allowing some space for better designed software where the large corporation can't find something versatile enough. The history in software is just a circular loop with a feedback input (where the innovation is coming from other companies or individuals). Oracle is only playing on the field of legacy systems to maintain. At the end, this is great for start-ups, free software developers or individuals who are innovating. For us, this is a brand new world opens with plenty of opportunities...