A lot of big companies do. The large UK utility I work for has dozens of large production Oracle dbs. I'm sure this is also the case with SQLServer / Postgres /

A lot of big companies do. The large UK utility I work for has dozens of large production Oracle dbs. I'm sure this is also the case with SQLServer / Postgres / DB2(!). The tide is turning though and for new systems /projects without strict regulatory requirements I'm sure cloud will become the primary choice.