IMO the principal advantage commercial RDBMS platforms have over the open source ones is query parallism [0], which can be a big advantage for certain query wor

IMO the principal advantage commercial RDBMS platforms have over the open source ones is query parallism [0], which can be a big advantage for certain query workloads. Postgres and others are working on solutions for this, and I find more shops look for alternative solutions instead of paying for Oracle licenses. [0] https://wiki.postgresql.org/wiki/Parallel_Query_Execution https://wiki.postgresql.org/wiki/Parallel_Query_Execution