Comment by empiko
I believe that sentiment to some extent. As soon as you establish an org, they will keep generating projects for themselves. Almost no manager will tell you that their work is complete and it is time to downsize their team. If you have an UX team with N people, the team will make sure to generate workload for N people, probably even more.
On top of that, managing a huge redesign is a great career opportunity for everyone involved. The incentives are simply stacked in favor of doing redesigns for their own sake all the time. You need a clear minded top level manager to stop these kinds of ideas.