Although it’s not always necessary to go through the middle - you can do the old switcheroo and build a parallel org in your image, emerge from the shadows and duke it out with the old structure.
If you come at the king you best not miss. Fail at taking down the old structure and those relationships are so destroyed they will come after you. I’ve seen groups of consultants become unemployable across the whole industry by failing to take down the old guard. Word spreads.