If you're a small company, then you probably only have one database with a few tables in it. If that's the case, it really shouldn't be a huge burden to be able to run a few queries to export that data. And if it is, then you probably have other scaling problems that are an existential threat to your business.

As an example: assuming a standard RDBMS setup with a primary and replicas, I would expect that bulk operations would be done on particular replicas dedicated for that purpose. That way you aren't interfering with writes, or with the "normal" reads that come with regular website use.