Inherent to steward leadership is caring for a trust (in this case, an organization) so that others might care for it in the future. This concept inspires the phrase; This is for our grandchildren's grandchildren that Kristin Evenson and I repeat so often in the Third Turn Podcast.
To lead an organization through a repristinization process, especially after a long and previously successful effort, the Maestro-level leader has to keep learning because the skills to do so keep changing and the standards for success keep rising. If leaders refuse to learn, the organization stops growing with them. If someone refuses to remodel that leaky bathroom, hoping no one will notice and pretending everything is as it has always been, the issue grows and complexifies.
The lesson here is that to keep something the same, we must keep upgrading. And if we want to improve and expand something, we have to upgrade it.
Lifelong learning is essential either way.