Tammy and G_DOg, and those are both still listed as recommended use cases. I just got permission to reach out to our Microsoft rep, I'm going to be asking about LTSC very soon because even on a 5 year support rotation, that's enough for many of us. I'm able to update as my software updates but vendors got burned years ago when the new audio subsystem was put in place. The release to manufacturing version was different (I think this was win7) and everyone built there code to work with preview and RTM versions... Then suddenly over night none of the software worked. Took the radio station automation and video editing companies that I use 6 months to work out the changes. They no longer build against what might be, they only build against what is actually shipping which means about a 6 month lag. LTSC allows us to remain somewhat current, yet maintain support for as long as needed. It's not like any of us change to the newest hardware every 6 months where we need this newest hardware support. I'm lucky i plain old regular PC's get recycled every 5 to 6 years, we can't afford to go every 2 years like some places that lease hardware.
And then there is the embedded systems like both of you mention that control... Well control all of modern life. I'd really like these to be stable and secure, and off the internet when possible.