They have specific goals to spend x amount on y product every month. SO that is not a mystery. Also, there are video game sales of 10s of millions where only 10

They have specific goals to spend x amount on y product every month. SO that is not a mystery. Also, there are video game sales of 10s of millions where only 10% ever finish the game. Yet the next version has the same mechanics and sales are higher and still 10% finish the game. Interesting...