So what you are asking for is a company to build and provision hardware AND software for you, and support it for you....
... Like Apple?
Seriously, there are few, and rare at that, any companies that do both, as all the distributions are software only. The main reason for that is because since Linux is customizable, anyone can put any hardware together for it, as long as the software to support it is in the kernel. If it isn't, or if the specs for it are closed, Linux won't be able to support it. At that point, you're at the point of rolling your own hardware with most major software that conforms to a standard, and Linux will support it.
That's why most laptops created by major manufacturers will have their hardware supported by Linux, especially if they used hardware that conforms to a spec: x86_64, {micro,mini}USB-{A,B,C}, ethernet, WiFi, etc. What you're wanting is another Apple, to where they control the hardware and the software distro, and gets their hardware support into the kernel, and then they support it. That is not how OSS in this case will work. If that company wants their hardware to be supported, then they would have to release the specs on it so that hardware can be supported on EVERY type of hardware Linux supports.
BL.