Let’s take the following diagram for granted:
Now why would that happen? Why would they choose to have unencrypted traffic through their network? And then something I read struck me:
“For an organization with a large-scale website doing business via advertising or e-commerce, or whose primary source of revenue is via interaction with a website, one of the most notable concerns is web page load times. A well-known metric that supports this comes from Greg Linden of Amazon.com, who posited that an increase in 100 ms of load time caused a 1 percent drop in sales on Amazon.com1.”
At such scales all milliseconds translate to money I guess.
 – “Make Data Useful” [PPT slides]