Stovepipes kill progress
One place I worked had a team for every possible discipline. All of whom wanted to be involved in approving every decision, as there was inevitably some aspect that would affect their "patch".
So, to do something as simple as extend a database table needed buy-in from the database team: fair enough. However the server guys could veto the decision, as the databases ran on their servers. Similarly the storage peeps had to be persuaded - as they looked after the spinning stuff and would have to allocate space. Same for the network: as all the data traffic flowed through their wires, so an potential increase needed to be assessed, modelled and impact-analysed. Add in the people who did the backups and service / continuity people and even the smallest change needed the approval of half a dozen or more teams. None of whom were looking at the big picture - merely how they could leverage the situation to get more budget, headcount or cross-charge.
As a consequence nothing ever got done. Nobody could ever agree and there was always someone else to point the finger at if a problem arose. Everyone quickly learned that trying to do pre-emptive maintenance was futile and the simplest way to get things done was to wait until some part of the operation failed, then raise an emergency change to get it working again.
Sadly this state of affairs arose because of all the problems that the earlier "free for all" organisation had suffered. Some consultants had come in, seen the opportunity and suggested ISO, or BS, or ITIL or whatever other faddy re-organisation would earn them the highest fees. The basic problem was that they were only shuffling the same people around. The people who neither wanted to do any work, nor were interested in what went on outside their little fiefdom, or had any loyalty to the IT department as a whole.
The truth was that any set of processes (or none at all) could have worked, if only the individuals charged with running the operation were motivated, skilled and truly a team. In the end the problem was solved by outsourcing the whole mess, so everybody lost. But at least no individual was to blame.