If Apple couldn't make it work, does Google really think they can? This should be headlining an event, not relegated to a blog post.
I think Google just has a habit of making products that excite techies but then prove unsustainable for a wider audience (reader being the prime example). I think them trying that (and then failing) is better for everyone than them simply not even trying, which is what some other major tech players do(Apple)
If people actually want to use this product and it is selling well and there are a lot of android XR users, then it's unlikely that Google will kill it. If it doesn't sell well and there aren't many android XR users, sure, it may be killed, but I don't think you'll find many examples of companies sustaining an unprofitable line of business just for the goodwill of the few people using the product.
What might save this one is that the Oculus Quest ecosystem being Android based with similar hardware, so it should be pretty easy for an ecosystem of appropriately designed software to get ported over.
Kind of like how big screen Android devices have been an afterthought for most apps (hope you like enlarged phone UIs) but what might rescue tablets this time is foldable phones showing up and making developers consider "what if the screen isn't a tall rectangle?"
I still think there's high chances they have one or two generations of hardware trying to copy the Oculus Quest / Vision Pro and then pull the plug and say "forget VR we're doing AI glasses." They were ahead of the curve with Google Glass, but have that habit of bailing on things and giving up the first mover advantage.
MS and Magic Leap tried to make holographic AR work, but the state of the art wasn't cheap and compact enough for them to make any money on it.