The Noble Art of LEOP-ing
Traditionally, you start planning. Then you design. Then you build, and then you launch your satellite. From the initial concept to the operation of a satellite in orbit involves a sequence of phases that together may take as long as a decade. Along the way you meet many challenges and invest much time and money in the project. Not to mention the obstacles you have to go through. Funding is one aspect. Technological and operational challenge is another.
Not to mention the launch phase of the project.