A 1 page pitch for your StartUp definitely is something worth thinking about and maybe also writing down. But if you don't have THE idea a longer business plan

A 1 page pitch for your StartUp definitely is something worth thinking about and maybe also writing down. But if you don't have THE idea a longer business plan is necessary from the beginning. And in general, in later stages 1 page probably won't help you to plan your business and therefore more is needed for sales prediction, Strategy, the marketing plan, HR policies etc.