I work at a big company. We have tons and tons of problems to go solve that are getting little attention in addition to having a lot of redundant and/or "what would you say you do here" type positions. Most of this happens by accident, but it's nearly impossible to unwind and redeploy those teams. My guess is that the big reasons why is because of leadership not wanting to look bad - a mix of "why did you staff this to begin with?" and "why did you let this go on for so long?" When these groups are eventually found during a reorg they tend to be let go vs redeployed, which makes it even harder for the remaining groups to do anything. The cycle is truly silly.