I'm sorry Batterynut. I thought modern day processors had millions/billions of transistors placed on a silicon wafers by tiny tiny little robotic arms. My bad
It blows my mind what happened in the world of computers. In 1979, my first job, I sold a computer about the size of a washer and dryer for $25k. It had 32k of hand wound core memory, and 5mb of removable disc storage and a 12 inch monochrome. I don't believe we included a chair.
Your 4 points on barriers that exist to the entry in the battery market is brilliant. The USA should have got in battery storage market years ago. We sold our sole to China, and now they control vast quantities of rare earth elements. Yes I understand Lithium iron phosphate is "old" technology and the DIY market is miniscule.