Accountants could use AI themselves. Their customers will probably demand lower prices or just ditch them to automate it. It is a bit sad if AI disrupts this field, because it seems like a cooperative strength of humans to organize this synergy.
On the other hand I wonder if it will reveal the downsides of AI at a larger scale. Small businesses will have much lower tolerance for LLM inefficiencies. If it doesn't save time/pain it's just not worth it.