Because Oracle decided to kill Oracle Forms; This is about "work safety" - Oracle made a huge mistake by creating the perfect development tool at the initial stage. Oracle Forms is very easy to learn, has great functionality, you can do almost everything with the help of forms and in a very short time. An application that takes several months of development in APEX can be implemented in less than a week using Oracle Forms, and it will be faster and with better usability. This means that companies have nothing more to develop in this area. Profit is a disaster. No software company wants to produce the perfect product, just like no doctor wants all people to be healthy. Thus, they stated that it was “old,” “mastodon,” etc. Etc., They ceased to support and suggested that JDeveloper is "instead," which turned out to be so confusing and complicated that no one even wants to migrate there; therefore, developers had to start using htmlDB, which was very primitive. Now with APEX, we have GUI features, such as a 20-year-old style, a real zoo under the hood, and all forums have questions such as “how to adjust column width?” Thus, this “progress” has returned to the past, but more importantly, the company gave the company another 20 years of development (and SALE!) Until they manage to get to where they were with the Forms. Profit!