I think the parts are probably at least 20K, and the software is the proprietary effort of many, over a decade or more, so the homebrew version will be incompar

I think the parts are probably at least 20K, and the software is the proprietary effort of many, over a decade or more, so the homebrew version will be incomparably inferior, to the point where it's not really "the same thing", like how a Power Wheels car isn't a Tesla.