What do leaders say are the drivers that led them to transform their org

Almost all companies are still being driven by old organizational environments. I suppose the ones who have transformed became more and more dissatisfied until they decided to do something about it and either self-developed or found help to transform.

What were the top frustrations that these leaders experienced that drove them to investigate and finally make a change? What are the specific words you have heard leaders say?

Thanks for your help. Keep up the good work!