And yet Oracle ships an S3 compatibility API: https://docs.us-phoenix-1.oraclecloud.com/Content/Object/Tas...
SQL standard and the respective certifications have to be payed for.
Before that, Oracle ripped off Chamberlin and Boyce's work. Which they should be able to do, because APIs shouldn't be copyright-able.
At least Oracle payed something back, unlike Google, ripped off Sun and then stepped on it on their dying breath.
If it wasn't for Oracle we would be stuck porting Java 6 to other languages.