Comment by miki123211

Unless the task is extremely well defined, protocols don't really work.

Imagine you're a shipping company and lock yourself into a parcel tracking protocol. You then decide to offer the innovative feature of parcel lockers, which need a code (or an action on your device) to open. How are you going to make the thousands of weird homebrew clients that people are using on their jailbroken Nintendo Switches or whatever to behave?