the Kofi the Anannan should not worry if the internet continues unde the successful growth and control of the USA.
Further in the article Mr. Annan says:
.. developing countries find it difficult to follow all these processes and feel left out of Internet governance structures.
For historical reasons, the United States has the ultimate authority over some of the Internet's core resources. It is an authority that many say should be shared with the international community.
In summary,
Because some things are difficult- Third-world countries feel left out
They (and nameless "many") expect the U.S. to share the authority we have over the internet.
The absurdity of this notion is enormous.