Balkanization of the net continues

Some people fear that the net may be suffering from a balkanization of the internet, with a broken up network consisting of people who inhabit a space that only accepts trusted users, coming from trusted domains. This is made evident by some ISPs blocking email from Europe, and also about a decision by Google to allow a new hyperlink tag attribute that doesn't weigh the link in the search engine. I think that this is an exaggeration, but I am very worried by Verizn blocking european email. This assumes that the web is American.