Your math/point-of-view is intuitive and quite common. However, startups are a game of large multipliers. At any given stage, you're always pushing to be 10X

Your math/point-of-view is intuitive and quite common. However, startups are a game of large multipliers. At any given stage, you're always pushing to be 10X of where you are now. Your long term goal is probably to be 1000X more valuable than where you start out. Dividing stock amongst 2 or 3 co-founders is a small order multiplier. You lose half or two thirds of the company. Hitting (or missing) the 1000X goal will determine your personal outcome - the amount of stock given to other co-founders, as an input variable, has virtually no comparative effect on the outcome.