>The only workable solution I could think of is to sell factory-rooted models for the advanced users and a locked-down version for everyone else How about Goog

>The only workable solution I could think of is to sell factory-rooted models for the advanced users and a locked-down version for everyone else How about Google's hardware "dev switch?" Originally they hid it inside the Kensington lock, but now it's purely a software switch. https://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices/samsung-sandy-bridge#TOC-Entering https://www.chromium.org/chromium-os/developer-information-f... When the switch is on it also displays a scary warning for 30 seconds when the computer boots that "this software cannot be trusted."