I'm sorry but if you believe the Framework is barely differentiated from other offerings, you are missing information or you are okay with laptops being wholly disposable and barely repairable.
There is no modern laptop like it where you can keep a chassis and update the thing piecemeal, easily buy parts for it, designed from scratch to be easily repairable and comes by default with a sensible system for choosing your own ports without external dongles hanging from delicate ports.
The market for a three screen laptop is much, much smaller than that and it would probably work better as a third-party accessory to the base Framework. Of course, it wouldn't make much sense because their only chassis has a tiny screen, but if you believe a three laptop production line is economically viable, surely you also can see how a MBP-like 16-inch screen production line is even more viable.
>you are okay with laptops being wholly disposable and barely repairable.
As I said, barely differentiable. Baring that, its as standard as a plastic laptop comes.
I'd personally be more interested in a portable than another laptop. Most laptop's I've owned have not needed repair for their lifetimes, and very seldom have I ever even thought about needing to upgrade my laptops "piecemeal" rather than just upgrading the whole thing together.
If I wanted a 16" MBP I'd buy a 16" MBP. Plus it can run MacOS.
What nobody makes is a portable workstation rather than a laptop. Laptops are great if you want situations where you want to use it on your lap - airplanes, airports, coffee shops, your couch, etc.
No that people are moving to a hybrid in-office/at-home work environment, and companies are going to "hot desk" models I want something maybe a bit heavier than a laptop, that I can easily transport from one desk to another another, and not have to spend a bunch of time hooking it up when I get there.