> why companies are still paying for commercial DBMS engines
In my experience in 90% of cases application code migration to a new db engine is the real road block.
I've seem many cases where even migration to a new Oracle version is a huge problem because of required app code review and full user acceptance tests. So companies pay licence fees for old unsupported versions. What is even more absurd.
And frankly speaking in many cases of simple apps even SQLite has all necessary features in replace Oracle.
In my experience in 90% of cases application code migration to a new db engine is the real road block.
I've seem many cases where even migration to a new Oracle version is a huge problem because of required app code review and full user acceptance tests. So companies pay licence fees for old unsupported versions. What is even more absurd.
And frankly speaking in many cases of simple apps even SQLite has all necessary features in replace Oracle.