I certainly wasn't claiming all Amazon products (or even some of the home security products in isolation) were upper middle class. However, most at-home servic

I certainly wasn't claiming all Amazon products (or even some of the home security products in isolation) were upper middle class. However, most at-home services _are_ upper middle class, and owning a reasonable number of security products is upper middle class. Furthermore, we're interested in the intersection of those two things, implying an even more well-off group.