• Can you run that outside of a virtual box?

    It’s not virtualization. It’s actually booted and runs on bare metal, same as the way Windows runs on a normal Windows computer: a proprietary closed UEFI firmware handles the boot process but boots an OS from the “hard drive” portion of non-volatile storage (usually an SSD on Windows machines). Whether you run Linux or Windows, that boot process starts the same.

    Asahi Linux is configured so that Apple’s firmware loads a Linux bootloader instead of booting MacOS.

    And wouldn’t it be a lot cheaper to just build your own PC rather than pay the premium for the apple logo?

    Apple’s base configurations are generally cheaper than similarly specced competitors, because their CPU/GPUs are so much cheaper than similar Intel/AMD/Nvidia chips. The expense comes from exorbitant prices for additional memory or storage, and the fact that they simply refuse to use cheaper display tech even in their cheapest laptops. The entry level laptop has a 13 inch 2560x1600 screen, which compares favorably to the highest end displays available on Thinkpads and Dells.

    If you’re already going to buy a laptop with a high quality HiDPI display, and are looking for high performance from your CPU/GPU, it takes a decent amount of storage/memory for a Macbook to overtake a similarly specced competitor in price.