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.