[1] http://gizmodo.com/just-in-time-amazon-patents-method-to-pre...
[1] http://gizmodo.com/just-in-time-amazon-patents-method-to-pre...
http://www.androidpolice.com/2016/09/14/wifi-assistant-can-s...
I have never given much thought to the idea of defensive patents, but if this is truly the intent of Amazon's patent then it's brilliant.
Showrooming benefits Amazon and will continue to until they have a majority of retail space (never).
These decisions tend to be opportunistic. Or maybe a holder honestly convinces themselves that this particular offensive use is really a "defensive" move.
I give these sorts of declarations the same value I give crime-law proposals where someone pushing it declares that it would never be used in that way.
Also if you don't patent X, somebody else might and then figure out a away to use it against you.
News sites too often write the patent articles in the form "company A plans to do Z" when the only fact available is that company A has applied a patent for Z. There's an incentive for a company to patent pretty much everything they can, since besides the patenting costs, there's no downside I'm aware of in having extra patents. The costs are probably negligible on Google/Amazon scale and when you have good processes.
I probably shouldn't have used the word "plans" though, since I don't know for sure if they will implement it.