> Because the old machine is still useful intact

I do wonder how many people repurpose old laptops when they get a new one. I have three old laptops, two of which I haven't turned on since I transferred my stuff to the next one. My partner uses the third one to game sometimes, but she's recently gotten a new laptop of her own (her old one is ancient), so I expect she'll stop using that one as well.

My current laptop is a Framework 13 (from 2022) that has already seen some upgrades and repairs that wouldn't be possible on any of my old laptops. I expect this chassis and SSD to last quite a long time, with periodic mainboard and RAM upgrades.

There's kits that let you adapt the old motherboard into a server unit. It's a nice way to get a faster laptop while reusing your old components.

I think there are some important differences. Desktops are a continually evolving space and a hobby all on their own, due to all the different cooling options and aesthetic upgrades available. And since a lot of these involve a case swap you might as well do the whole enchilada.

The niche created by Framework, in contrast, is all about reuse. It's just a different game.