Your company changes rapidly, your pitch stays the same. I meet many company CEOs that started their company years ago, often at some startup pitch event. The story opening then was about them, in the absence of a real company. Years later, that same intro can often still be found in the presentation, just with an update of the sales and employee numbers.
Your pitch presentation should be one step ahead of your company, not one step behind.
Art: Lautrec, Woman at her toilette, 1889
