Because information curated by an AI with validation by a subject matter expert is worth significantly more than that which was done without a human in the loop. There's no determinism with these systems, and from experience with GPT-4 doing classification tasks, it'll do everything exactly right until it doesn't.

If it's like many businesses in the classification world, they aren't lacking for work, so it's more like they'll be able to do 10x the work done by keeping the same number of people.