“We are what we repeatedly do. Excellence, then, is not an act, but a habit.” Pretty wise words from Aristotle. Malcolm Gladwell calls it the 10,000 hours you needed to gain proficiency at a skill. Cal Newport argues that skills and proficiency create passion, not the other way around. Good review for his book So Good They Cannot Ignore You here.
If I were to draw it out. Here is my generalization of consultants, lawyers, bankers, and the lowly analyst. Consultants are PowerPoint.
Lots of reasons for this, and it is a craft. 90%+ of PowerPoints are dreadful: lacking in content, illogical, poorly crafted, not visual, not persuasive, and frankly, boring. Executives are trained to think about the WHY, and the WHAT. As a result, PowerPoints need to get to the point, and support all arguments well. Yes, Powerpoints are over-used, but that does not diminish the need for good ones.