What's the hardware compatibility like? If you're open to it, there is a market for something that will boot with the bare minimum non-specialized generic drivers on all hardware into a shell or some form of UI.
We currently run on x86 PCs and a number of ARM SoCs (the linked page should give you an idea of which ones). Adding support for new SoCs and boards is pretty straighforward. Feel free to reach out to me directly with what you have in mind: evan AT minocacorp.