People are building DBMSes and, instead of writing the engine from scratch, are choosing an off-the-shelf solution that integrates into a DBMS with ease. A bet

People are building DBMSes and, instead of writing the engine from scratch, are choosing an off-the-shelf solution that integrates into a DBMS with ease. A better question to ask is why the world needs yet another DBMS, but the reasons are no doubt valid.