In general, listed companies have many requirements, and both internal audit and external audit are very strict.
Information disclosure of listed companies is very important.
So I don't think it is necessary to use the system of major shareholders.
If * * * uses an information system, then the system will definitely be isolated by authorization, and the company data will not be interoperable. But this violates the "five independent principles" of listed companies. In order to avoid trouble, it is better to have a separate system.