Probably, although I work for a government department that uses Oracle extensively but no new projects are on the platform, eventually everything will be migrated off it (mostly to the SQL Server hosted on Azure).
And let me guess - the project timelines for "eventually everything will be migrated off it" run easily into seven figures of Oracle invoices? (And realistically the delays in those migration projects will mean double that gets paid to Oracle before they're completely out of your billing system?)
I don't think there's any real timeline to get rid of Oracle just that new projects won't be using it as a DB and eventually it will no longer be in use.
Like eventually nobody will be using mainframes... except they are still there, and somebody is still cashing cheques for their support.
Ironically, it's Oracle itself who is busy self-destroying. The move to cloud-based subscription services, where switching to competitors can be so much easier, looks good in the immediate but it's pulverizing their stranglehold on partner ecosystems, and making their long-term outlook more fragile.