Arguably yes, but not typically used for what we consider (local) IPC. But as I see from your other response, you probably understand what triggered my post.
TCP is IPC
Ethernet is IPC
Putting files on a drive and mailing it is IPC
Every way of moving digital information is IPC and no one can possibly ever prove me wrong
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.