"If it ain't broke don't fix it!" doesn't really cover this I think. The issue isn't if the internet is broken or something. It's about improving the internet (from another perspective as the american one, things do lack there) and a pile of political things.

Whoever thinks europe, china, russia, arab states, etc. don't have the resources or expertise to build their own dns system is seriously ignorant.

The countries who "are no fans of freedom of expression" don't need control over the naming system to censor the internet.