2/ for gameplay reasons, the original Cyberpunk 2020 had un-copyable programs & files. you couldn't just copy stuff from your own cyberdeck to your buddy's.
the game would've been a bit less *engaging* if you could. call it a cyber superpower.
3/ the present-day gate-keeps are the mass distribution platforms that enforce the (quite broken) DMCA to cover their own arses.
you *think* you can copy any program or any file, but it gets ever more at mercy of devices' manufacturers.