I am not saying you are the only person who used Boot Camp. And I am also not saying this can only apply to x86_64.

And if you use your own definition of 'open', just buy some random Dell or Lenovo laptop and live a happy life. Apple's market and your market doesn't have to intersect.

As for what market doesn't exist: the one with the more globally used definition of 'open'. There is an insignificant amount of users that would really like it (including me), and unless you count the OLPC, there is no market, because even if we assume a demand, there is no supply because it's not feasible. Even if you'd just take NDA'ed technology as an example.

> Open to me means I can install any x86-64 desktop OS on it

But you claim you would have bought an arm64 machine if it could run boot camp?

Between that and wanting CUDA it sounds like you would have never bought a Mac after 2012 (the last year you could get an nvidia GPU)