The shelf is full of bought systems. Some of them are good. Teams buy one and still build another. They always did.
A company does not run on the average of how work is done. It runs on how we do it here: this supplier list, this shift, this close.
That part used to be written down. A manual, a wiki, a page of procedures. Not because a written procedure is a good way to get work done, but because writing the SOP was cheaper than building the software.
It is not cheaper any more. Describe the shift handover to an agent and you get something that runs by the end of the day.
So the in-house system is not procedures now. It is software. It starts as a link in a chat, becomes a screenshot, then a copy on someone’s laptop, then two more copies and no official one.
Then the person who wrote it leaves. The work still runs on it, so it stays: unowned, unchangeable, and the real system.
Hub is a place for the tools teams already build.