Those things are too rich for my blood, but it seems to me like the concept is a great idea, and it would be nice if something like that became cheaper and standardized across brands.
I've always been really annoyed by the fact that laptops with socketed CPUs disappeared a decade ago. And these days a ton of laptop manufacturers are very eager to solder the SSD and RAM as well. This occasionally goes as far as laptops with permanent, soldered single channel RAM, and that's horrifying. These things are destined to be e-waste, ending up in landfills far sooner than typical for equivalent desktop components.
When you upgrade a desktop you have so many more options that will save you money over buying a totally new system. GPUs are essentially plug 'n play. You can often upgrade the CPU just as easily, though every once in a while you'll need to replace the motherboard. Same goes for RAM. Everything else can almost always be reused: the case, the fans, the CPU cooler, the storage, the monitor, the mouse, and the keyboard. Even the PSU if you're not getting a significantly more power hungry CPU or GPU. All of that can add up to a ton of money.
Socketed CPUs in laptops are probably never coming back due to how much space they tend to take up. And laptop GPUs will probably never be socketed in the first place for the same reason. But if you could buy a standardized chassis and simply swap out entire motherboards that come in a standardized laptop form factor, upgrading would be so much more cost efficient, as would laptop repair. Also, lets bring back easily removable and swappable laptop batteries while we're at it.
Unfortunately, this all flies in the face of the inherent capitalist enshittification going on with consumer electronics, and I'm skeptical Framework will ever be anything more than a very expensive niche for enthusiasts who like to tinker with their devices. But I don't see any technical reasons why something like this wouldn't be possible and practical.
There are Clevo laptops (I think Clevo basically manufactures stuff that is whitelabel and sold by someone else) that have card slots for GPUs, but I think they're not a standard form factor. That's most likely what you'd find instead of a socket, less because of space concerns (because the GPU has a bunch of required hardware that has to go somewhere either way and the port is not that big by comparison), and more for reducing latency for the memory. Look up a picture of an A100/H100 SXM, that's essentially as space efficient as a socketable GPU can get. And those use HBM which is currently way too expensive and hard to manufacture to go in any consumer GPU, so there needs to be space for the VRAM which takes up nearly as much space as all of that power infrastructure.