True.

Except that consumer electronics companies like Frys now get low warranty, extra shitty, extra cheap models to suck the Black Friday morons in since they know those consumers won't buy anything else.

I have, in fact, been warned at several stores (not just Frys) on the weekend afterward: "That's our Black Friday model. This model over here is nominally more expensive ($20-50 max), has the normal manufacturers warranty, and is a really good deal as it's 50-75% off our normal price anyway."

But a Black Friday stampede is not representative of a long-term stable customer base. Selling a crapload of stuff at a tiny margin doesn't say anything about your business's ability to make it to the next Black Friday.

My point is that—in the event they get significantly threatened—amazon has proven that they can run their entire retail business as a loss-leader until they re-establish a perception of price dominance.