I'm not opposed to the idea, but I wonder how small the pieces can get before they're not practical to run as a company anymore. Obviously, things like Instagr

I'm not opposed to the idea, but I wonder how small the pieces can get before they're not practical to run as a company anymore. Obviously, things like Instagram, Messenger and WhatsApp could be competing with their counterparts. As I've never really used Facebook, I don't know what the core app does and how it could be split up. Do you have any insight there?