What problem does this solve that isn't already handled by I2C etc? I appreciate it is software-only, but if your hardware uses a different bus already using t

What problem does this solve that isn't already handled by I2C etc? I appreciate it is software-only, but if your hardware uses a different bus already using this seems like it would be futile. If you've got control over both ends, otherwise, and you're not constrained by any existing bus why would you just PJON over TCP/IP, UDP, or some other similar standard? Struggling to see how this could be useful - what problem does it solve, exactly?