Dark data is the info companies collect but rarely use—about 60-80% of all...

https://garrettwigp625.tearosediner.net/how-do-i-keep-ai-from-pulling-regulated-data-into-answers

Dark data is the info companies collect but rarely use—about 60-80% of all stored data just sits idle. This hidden mountain wastes businesses up to $2.5 million a year in storage and management costs