I am trying hard to see who could be the target audience for such a thing. My best guess is engineers who are not currently employed, but who would like to up specifically their Oracle skills, as opposed to other valuable alternatives like Postgres. Am I missing something?
Simple VMs for testing purposes are useful for infrastructure consultants and developers, in niches where the products support Oracle as deployment database. It's a smaller and smaller audience, because of cloud taking over, but someone still needs it.
Oracle thank you for that one!