Like when you send a .7z instead of a .zip or .rar to a friend or a teacher because that’s what your computer has installed and they’re like “Oh No, not one of those, now I have to install 7Zip” even though the same program that opens .rar also opens .7z I feel like people are way more annoyed when they receive a .7z
That doesn’t count, businesses will continue to use whatever they have instead of upgrading if it’s still fit for purpose.
see also COBOL
“Battle not with monsters, lest ye become a monster, and if you gaze into the
abyssCOBOL, theabyssCOBOL gazes also into you.”