alt Hacker NewsWebsites are manually put together things. I'm talking about something that runs automatically in the background and you don't even think about it. Our computers today are 10,000 times faster than what we had in 1990. Now extrapolate into the future. 100 years from now someone will be able generate a custom OS at today's level as a toy in minutes or less.
The speed of light disagrees with you unless subatomic computing pops up at some point.
Or to put this a different way, they won't be developing a whole cloth custom OS but more like customizing a linux kernel to do what they want. The reason is there is some minimum of problem space exploration required, hence entropy generation needed, to understand the interactions of the hardware and it's limitations.
Hence if you wanted to run this 10,000,000X faster computer in the future to do what you are saying, it would explode like a supernova with the energy concentration required to do it quickly.
TL;DR it's a few trillion times more energy efficient not to do this.