That condition usually doesn't hold in practice. Very few programs have a reason for reading browser history or cookies. Excel has no purpose accessing the Notepad++ appdata folder. Not all-or-nothing.
How would your browser read browser history and cookies? It gets its own app data folder? What if I want to export my browser history to another browser - which is currently impossible on Chrome for Android, precisely because no other app is allowed to access Chrome's history file?
How would your browser read browser history and cookies? It gets its own app data folder? What if I want to export my browser history to another browser - which is currently impossible on Chrome for Android, precisely because no other app is allowed to access Chrome's history file?