I don't think they would. What market would that exactly be targeting? Devs, who are overwhelmingly just provided macbooks via their employer? They'll still run macOS because IT requires them to.

Linux Gamers? The arm story for proton still needs work (hopefully the steam frame will help). Nvidia+Microsoft are working on it with that new surface ultra, but verdicts out on whether that will boot Linux or not as its specifically a Microsoft partnership.

General non-dev, non-gaming, non-creative users? I don't think they'd buy a mac specifically for Linux either. That market is much better served by Framework, System76, Tuxedo, Lenovo (thinkpads), etc.

And Apple certainly isn't going to win over any FOSS purists either.

I think the intersection of "I want macbook pro hardware" and "I must run Linux natively on it for my workflow" is a lot smaller than you think.