I've tried going down the rabbit hole of making a pocket sized Linux PC that could replace my phone, the hardware isn't there. Serious question jack, you thought about starting a semiconductor fab? There are ways to acquire the equipment and expertise outside of going straight to asml/lamb/gigaphoton if you know who to ask. Finding buyers for the silicon seems like the biggest issue, I'm sure a high percentage of people here would want anything produced, but you would presumably need to move tens of thousands of units each just to justify the lithography masks.