Postgresql's greatest advantage - no headache from dealing with BS from Oracle or MS.
We have been building/rebuilding our applications on top of PostgreSQL but there are still a lot of departments that buy the "Oracle is better / We need paid support" propaganda. Props to Russia for their forward thinking views.
Now you get the privilege to pay licensing for all the cores in your environment where you can migrate the VM to.
With such a policy, what could possibly go wrong?