A model can only read what can be found
The idea that a language model simply searches "everything we have" underestimates how much of a company never becomes a file at all. A great deal lives in email threads, in handwriting on a printed record, in a spreadsheet one person maintains, or in the head of the colleague who has looked after the machine for years.
No software can open up what was never captured. A tool built on that basis does not give wrong answers because it is a poor tool — it gives incomplete answers because the ground under it is incomplete. For the business the effect is much the same, but the distinction decides where the work has to start.