Every company sits on a pile of its own knowledge: standards, manuals, contracts, past reports, research. When someone asks a question, the answer is usually in there. Finding it takes hours.
General chatbots cannot help. They have never read your documents. And when people paste documents into a chatbot, it often produces an answer that sounds right but appears nowhere in the source. Your team then has to check the answer by hand, which is the work they were trying to avoid.