The legacy PC makers are lucky that Ubuntu doesn’t work on this, or else they’d face even more competition. By now, everyone hates Windows. And I’d wager some people hate it enough to be willing to switch to whatever works and is halfway ad-free.
If Linux would be able to be installed and fully working on this out of the box, then the laptop wouldn't cost 600 dollars. Apple profits from monetizing people tied to its iOS+MacOS ecosystem. If you're not gonna be a MacOS/iOS user, you're worthless to them and selling you a laptop for only 600 dollars is not good for business anymore.
How's your reading comprehension? Where did I say they sell at a loss? I said they want to monetize people inside their ecosystem.