The product bulk export CSV should include Rich Text fields, native or custom. Even if they are not editable so that they can be reviewed, printed, etc.
The Mixtable XLS/CSV Exporter app can do exactly that and is perfect for what you need. It includes rich text fields (both native and custom metafields) in your exports so you can review, print, or work with that data outside of Shopify. And it’s completely free.