Personally I think its very likely MS will eventually push to strongarm OEMs into locking secure boot to be enabled. All it will take is another round of "security improvements" and the public eats it up. The market would then fragment into laptops that can only run Windows and maybe more expensive laptops that allow you to disable secure boot. If the number of people who actually care enough to vote with spending a few extra hundred $ remains as low as it always has, over a decade it will drive open laptops to become wildly overpriced and eventually cease to exist.
This makes me sad. Old low-powered laptops with a light-weight distro are a joy to see and give out to family members to browse the web.
Not as long as the EU remains functioning.