Remember it's not just about being able to find one single engineer - then they become key-person risk. You need multiple engineers to be able to handle the loss of that engineer, either temporarily (vacation) or permanently (suddenly hit by a bus). Then you end up having a team of DBAs. Then you have functional rather than feature teams. Then you need multiple managers to align to get anything done, and have internal politics.
Being able to consume databases as a product has non-trivial value.
Remember it's not just about being able to find one single engineer - then they become key-person risk. You need multiple engineers to be able to handle the loss of that engineer, either temporarily (vacation) or permanently (suddenly hit by a bus). Then you end up having a team of DBAs. Then you have functional rather than feature teams. Then you need multiple managers to align to get anything done, and have internal politics.
Being able to consume databases as a product has non-trivial value.