So, most windows installations come with an OEM key because it came pre-installed. OEM keys, last I knew, don’t have this support, because the manufacturer is responsible for that.
If you bought a lenovo laptop, its on lenovo.
But anyone has been able to buy windows directly with a standard license key and windows supports those computers directly. I’ve never bothered to use it but I worked with people who did and (again, last I knew, some 10+ years ago) they got someone with a thick accent reading from some support article who didn’t know what they were about.
But they could call. Technically that’s support.
Lots of people want adjacent room lights or beyond to be on.
I turn all the lights in my house on at night, despite the savings loss, because I just prefer being able to see into other rooms. (I also use 100w-equivalent bulbs, to really boost the brightness).
Some people have fears, rational or irrational, about the dark. Children, people paranoid about someone breaking in, etc.
Some people feel pets should be able to see where they’re going.