Postgresql is also well supported as a managed offering for PAAS offerings as well.
Heroku has https://www.heroku.com/postgres
Fly.io - https://fly.io/docs/reference/postgres/
and lots more of these pretty small players - that still drive adoption.
Then it's very well support on AWS / GCP / Azure
So postgresql is just crushing it in terms of adoption.
I honestly have not seen major Oracle offering in a bit.
Looking at what tech companies are building on is oracle a major player these days. They used to be THE pretty much only player - those days feel gone by now.