2, you have the answer, since chaos must be managed, unified management is inevitable, files are companies, not departments, files themselves are information, and unified management of information can improve efficiency. The status quo of file management you mentioned also reflects many problems in company management.
3. Cognition of archives: archives are information and evidence to prove whether the information you disclose is true or not. For example, a listed company discloses that it has signed a major contract, and the contract is a document. As a result, no one knows where the original contract is, so who believes the information you disclosed? This will be a joke.