Uninationalism

In some ways, this is already happening. As you mentioned, the internet is drawing people from other countries together. There's less xenophobia about foreigners these days than in the past. There are lots of international and supranational government-groups forming (The EU, for example. It's just an example, I don't need a bunch of europeans to come running in and berate the idea.) We already have a de facto common language and common currencies are forming. Heck, if you think about it in a purely technological sense then we already have a common currency, because money that's essentially stored digitally merely needs to undergo conversion, which is automatic, and it can be accessed from all over the world already. The world economy is already so interdependent that it wouldn't have much of an effect on that.

Well, that's more Globalization alike than another thing, but Uninationalism, as Wani proposes, it's way more complicated than Globalized capitalism.