Caveat emptor.
If you shop unarmed or have no knowledge of what you're shopping for -- it's on you.
I'm not condoning the behavior, but . . .
You really are implicitly condoning this sort of behavior by advancing a doctrine for which such behavior is explicitly condoned. However, caveat emptor is not a maxim anyone would really want to universalize, because what it means in real terms is huge transactional costs (time, effort, possibly money) added to every economic transaction in which the parties are adversarial. People routinely malign the abundant costs of litigation, and the adversarial legal process generally, but that is effectively what "caveat emptor" enshrines - a fundamentally adversarial process in which each party is nearly exclusively responsible for securing their interests.
The reality of consumer economics is that if "caveat emptor" were universalized, you'd have consumers mired in extensive, long-term research projects prior to buying any given product, which would bring sales to a crawl. People would have to spend a bunch of time developing expertise solely for the purpose of managing the transaction, wade through what would probably be a cottage industry of misinformation purpose-built for such a system, and possibly hire third-parties to oversee particularly challenging cases. Secondly, a system built upon distrust and adversity generally just breeds contempt, discord, and displeasure for all parties involved.
Sound hyperbolic? Of course it does, because
caveat emptor is itself an extreme, unrealistic, and unreasonable doctrine. What people really probably have in mind is something like "don't be negligent," but that standard is amorphous and subject to a lot of rather loose thinking about obligations and virtuous exemplars. Nonetheless, some solution is of course needed. I think the one that makes sense is more or less the one that many people gesture towards, which is that the company has an affirmative duty to produce the sort of information consumers typically are looking for in a product, without necessarily having to bulletpoint and highlight the deficiencies to the point that it seems like they are doing the job of discrediting themselves on behalf of others.
Side note - I had no idea Apple employees received commission. I was under the impression that they didn't? [edit - as someone noted at the bottom, it's unclear this actually happened]