It's getting less relevant as regular users stop using the filesystem directly and instead rely on proprietary services for their data. Google Drive doesn't rel

It's getting less relevant as regular users stop using the filesystem directly and instead rely on proprietary services for their data. Google Drive doesn't rely on file extensions. Though for all I know, Microsoft's web stuff does... What's the web equivalent of using a floppy disk to move data between Mac, OS and Windows, I wonder. Downloading to the local computer and uploading, presumably. I guess that is pretty equivalent. Though you can't even download the native representation of a Google (text, spreadsheet, ...) document.