You do understand that in the 5-step-plan, only step 5 would be a mass-market product that is ready for the average end user. step 4 ist not considered ready for the mass market (or the typical end user). - this is where your analogy fails: yes, every consumer electronic product is a step to the next... but only very few are designed to not reach the mass market, to not please the crowds, to be an incomplete concept device for geeks and enthusiasts. This is the one point that you didn't get.