Most delivery systems aren't operating models.
They're coping mechanisms built by people who confuse adding structure with achieving clarity.
More here: https://www.jonmunson.co.uk/posts/why-you-rebuild-the-same-delivery-processes-every-6-months/
Why you’re Rebuilding the Same Delivery Processes every 6 Months
If you’ve rebuilt your delivery process three or four times in the past two years - you’re not alone. I see it all the time with agencies and product teams. Things get messy, so someone steps in to “fix delivery.” They spin up new templates, clean up tooling, maybe even restructure roles a bit. It works - for a while. Then, slowly but surely, the friction creeps back in.