The issue I have is companies like Google and Puri.sm have asked Intel and AMD for a blank signed blob that completely disables ME but they have refused this. It would take them literally no time at all. This raises all sorts of red flags that something dodgy is going on.
If you had the chance to make a supplier who creates millions of chromebooks happy, wouldn't you take every opportunity to help them, especially if it costs you little to no money at all. Obviously there is a big reason why they don't want this backdoor removed.
Which is why someone with deep enough pockets and some help by the community (crowdfunding?) should invest in making open alternatives possible. Thousands of people have been laid off in the past by big silicon corporations, I refuse to believe there aren't 10 of those people in the world who caannot be hired to design an open platform. It doesn't have to be fast as modern processors; if it allows opening a webpage at acceptable speed or playing a video at 30fps 720p that is more than enough for most us, and more importantly would send a huge message. Many would of course disagree, mainly gamers who would sell their soul to the devil for a faster graphics card or other people who don't care about their privacy. Once the design is done, it comes the fab. Decades ago any company would have to set up its own but today there are fabless companies who design chips and fabs producing them for various customers, so it's just a matter of money. The goal isn't to create an alternative with respect to computing power, but rather in usage. The message is "we're not using your bugged shit to communicate among us or keep our data".
Companies that act as OEMs for enterprises most likely have a larger footprint of Intel installs than Google. Any single companies usage of a product is dwarfed by how much effective installs a large OEM might have.
Maybe if Lenovo, Toshiba, Acer, Dell, etc all asked Intel to provide said blobs (and the threat was tangible) then they would probably reconsider.
It would be more useful for them if it could be controlled at the source level. The management engine would be fine if it were free software and could be replaced.
I'm very unhappy with my old Sun servers, for example, because the management system cannot be upgraded and the servers are no longer supported. I'm stuck with proprietary insecure software that I depend on and that I have no way of changing. It's all worse if the insecure outdated software can only be replaced by soldering wires to a chip on the board.