Why doesn't CTRL + C exit vim?

I'm aware that if I press esc followed by typing :q!, I can exit the vim editor, due to [this question](https://stackoverflow.com/questions/11828270/how-do-i-exit-the-vim-editor) . However, the standard convention is for programs to exit when ctrl + c is pressed, which sends a SIGINT to the currently running process. For example, top, tail -f, and ping all follow this convention. My question is this: _Why_ doesn't vim follow this well-established convention? Is there a historical reason, or is it something else? It seems to me that it would avoid a lot of confusion for new users if it followed this standard convention like everything else. _(While we're at it, why is it SIGINT and not SIGTERM in the first place?)_