There's a boatload of Linux contractors who will do the technical work for you and maintain it for as long as you want, at the right price. That includes fairly

There's a boatload of Linux contractors who will do the technical work for you and maintain it for as long as you want, at the right price. That includes fairly large names like Suse. As far as I'm aware, all of those contractors focus on the embedded Linux market because consumer OEMs simply aren't asking for those services. The major OEMs don't have either the margin or the consumer demand for it, and they're not willing to commit the resources to escape that local minimum.