I suppose that's true. My mind was already on the likes of Qualcomm, Apple, Ampere and Broadcom but the base ISA and some of the reference designs used in public are indeed pure ARM (the company).

Ideally there'd be a player like Fujitsu (also an ARM licensee), they can do an entire laptop where only the manufacturing and software is not in-house (they don't have the capacity to do that AFAIK). If you then slap some coreboot (or U-Boot) and linux on it, you'd be pretty close to a much less US-attached laptop.