That's just legacy of audiocassettes and VHS tapes, and later on, magnetic tape data storage used for popular home microcomputers. With those, you literally "copied over".
With floppies, you actually could do that as well, if you were copying floppies verbatim with e.g. DISKCOPY.
Yes, in the good ol' times I would have used a nifty little DOS program called Venus, that would simply copy the "whole disk" (a lot like dd but with a semi-graphical interface).
Of course the "real thing" was the Deluxe Option Board (some details about it and a bunch of the common copying utilities of the time here):
With floppies, you actually could do that as well, if you were copying floppies verbatim with e.g. DISKCOPY.