“Not neccessarily, for example early Cellphones and personal Computers were not cost efficient, yet their purchase did spawn a market during the days of the 4k PC and the 1k cellphone.”
#1 - WE THE TAXPAYER NEVER PAID FOR EARLY CELL PHONE SUBSIDIES!
That is a huge gaping hole in that analogy.
Subsidies do NOT help advance technology. all they do is suck money from the productive and give it to the less efficient.
#2 - Secondly, cell phones and PC rode the Moore’s law curve of semiconductor manufacturing. Solar panels cannot, as there is a limited energy per square inch from solar.
Was there even a Moore’s law in the early 80’s?
Orignal cellphone tech did use localized Radio Towers though which are heavily regulated and licensed by the .Gov’s so don’t go overboard with that notion.