Actually, Ctrl+C is the ASCII Code for the control character ETX (End of Text) since the early 60s. This is not a hotkey but a control character. To change this system, you’d have to change not only dozends of terminal emulators and the kernels of all unixoid operating systems, but at least ANSI, Unicode and Posix, too. And Windows, by the way - even Microsoft uses ctrl+c in both cmd.exe and powershell to kill the running process.
Actually, Ctrl+C is the ASCII Code for the control character ETX (End of Text) since the early 60s. This is not a hotkey but a control character. To change this system, you’d have to change not only dozends of terminal emulators and the kernels of all unixoid operating systems, but at least ANSI, Unicode and Posix, too. And Windows, by the way - even Microsoft uses ctrl+c in both cmd.exe and powershell to kill the running process.