What common problems does a collection of spreadsheet created by end users shared with the typical file system?

Common problems with spreadsheets created by end users and shared via typical file systems include version control issues, where multiple users may inadvertently edit different copies, leading to inconsistencies. There's also a lack of data integrity and validation, as users may enter incorrect or inconsistent data without oversight. Additionally, the absence of centralized access can result in difficulties locating the most recent version, while security risks arise from sensitive information being stored in unsecured locations.