On platforms that have app stores (including desktop operating systems like Windows, some distributions of Linux, and especially macOS), the apps you download from the store are sandboxed (UWP; Flatpak/AppImage; Apple) far more than raw binaries. Tauri apps are raw binaries; Electron apps are too; those are both different from visiting a webpage in a browser, regardless of whether such navigation happened manually or automatically (as in from a PWA shortcut).