once you get the NRE [non-recurring expense] out of the way
The entire cost of electronics is the NRE: look at your $800 iPhone - raw materials inside:
Three spoonfulls of oil to make the plastic bits.
Two spoonfulls of sand to make the silicon bits (includes the glass screen and fibreglass PCBs).
Not quite enough copper to make 2 inches of water pipe,
Not quite enough steel to make a table knife or fork.
Not much at all of quite a few other things
Way more than 2,000,000 man-hours of highly paid engineers' design time (if you include time to design every single component, including bought-in CPU, graphics, etc- remember to descend recurssively into the design of every single bit of logic, power disttribution, analog bits). Of course most has been amortized over the past 50 years, Apple only pays for the top layer.
If you start again from scratch, you might not need to go back to George Boole, or Aristotle, but you risk having to redevelop one hell of a lot.
Perhaps you shold meet a few engineers and talk to them.