Totally get where you're coming from. We shouldn't try and shoehorn the Blockchain where it doesn't belong, just for the sake of Blockchain. But when it's for a product that it's actually perfectly suited to then (if it was me), I'd be looking at moving the company forward. It is a payment system after all.
Also, database software tends to run on dedicated servers and generally aren't on a distributed network. From a traceability point the A smart contract on the Blockchain is almost bulletproof.

Truly appreciate your input and time, and thank you for reading 👍