Cost of Semiconductor Manufacturing

• $30M to develop 65nm devices, $500M to develop 3 nm https://www.extremetech.com/computing/272096-3nm-process-node
• $170M to produce 90 nm in Indiana. [1]
• Arduino is 350 nm [2] - 'wouldn't be asking on Reddit if it mattered'
• Original Nintendo was 8 bit. 32 bit microprocessors such as 8 Core 80Mhz are 350 nm [https://en.wikipedia.org/wiki/350_nm_process - 2006