Technically 13 root servers belonging to 12 different organisations, but the structure is more complex because there are observers and stakeholders that have some voice and observers status, from governments to private sector and businesses etc.

There track record is very good, and ther is no close second in terms of being a good custodian of the commons they oversee. 

It is a n extraordinary claim that some other organisations should be equally trusted. And even then, why would we move from what we already trust.