That is why a fully automated firm would be a paradigm shift. Instead of requiring someone to be responsible and to QA things, you just let AI systems be responsible internally, and the company responsible as a whole for legal concerns.

This idea of an automated firm relies on the premise that AI will become more capable and reliable than people.

In this regard, the company cannot be created where there is not a single person tied to it, at least legally, even shell corporations have a person on the record as being responsible. So there needs to be some human that is apart of it, and in any "normal" organization if there is a person tied to the outcome of the company they presumably care about it and if the AI 99.99% of the time does good work, but still can make mistakes, a person will still be checking off on all its work. Which leads to a system of people reviewing and signing off on work, not exactly a fully autonomous firm.