I realized that the only reliable way to copy files between Windows, MacOS, and Linux is FAT32 formatted USB drive, assuming you have USB-C/A adapter available.

I realized that the only reliable way to copy files between Windows, MacOS, and Linux is FAT32 formatted USB drive, assuming you have USB-C/A adapter available. Cloud object storage if you don't want to split the file into 4GB pieces, take the extra step to setup the clients, and upload speeds are acceptable. Between iOS and Android there is no local solution without PC in the middle and at least one MacOS machine is required. Most seamless is FTP server, but no free and acceptable FTP app exists for either. Very disappointing for an era when "AI is replacing and firing everyone".