I'd hazard that many of the teams aren't so much happy with CSV, as they are ignorant of its costs. I fought for a bit to get them to move to parquet, but all

I'd hazard that many of the teams aren't so much happy with CSV, as they are ignorant of its costs. I fought for a bit to get them to move to parquet, but all too often they insist on having it in a format that excel can open.