I, too, like that Netflix is giving out this kind of information, but let's remember that in the USA many people have two or even just one choice. I have my choice of Comcast cable or AT&T DSL for broadband. That's it. And I'm not 100% sure that AT&T DSL would actually work in my building, and it's top speed is 6Mb/s compared to Comcast's 12Mb/s (or maybe 15Mb/s, I forget). Plus, AT&T: the only company I can think of with worse customer service than Comcast.
So while I like that they're giving out this information I'm not sure it's going to be a good idea to piss off ISPs with this near monopoly situation in many parts of the USA.