Could it possibly have nothing to do with what Apple offers? I'm not so sure that is correct... how has Apple remained part of the "in-crowd" wants for so long? What's "in" is naturally what's "out" tomorrow. It's how it works. I think that Apple's offerings, the product only being a part (good support for the ENTIRE product being another), has much more to do with it.

I've worked on machines from smokers only to find the insides covered in fuzzy, sticky brown residue. It smells horrible as well. I can see how this sort of thing could cause warranty issues without question.
If I were Apple, I'd simply take in image of it and show the customer.

"I don't know of many cats that do their business, say, on the couch rather than in a litter box."

Most cats do this instinctually. We've had many cats (kittens, newborns) over the years, and I've never had to "train" them to do so. Just an FYI.

However, we HAVE been able to train a few to do some things, like retrieve a toy, etc...

Would any world initiate be a pretty "broad view"?

Because, that's what schools are today, no? Breeding grounds for tomorrow's cubicle?

And we wonder why the world laughs at us...