Poor countries are often eager to sell some right their country has, as a sovereign entity, but is not using - even for a relatively modest sum of foreign currency. In a corrupt country the money might never see the treasury, going straight into some official's pockets.
Of course, such arrangements are not very reliable. The relationship between a sovereign entity and an individual, or even a small corporation, is unbalanced. The rules of the game are set by one party, and varied at their whim. "But that's not fair" might work in countries that pride themselves on fairness, such as the United States of America (though don't count on it) but it won't get you very far in Equatorial Guinea.
If these arrangements annoy the other sovereign entities, they might do something about it. For example, the Paris MOU (and subsequently similar Port State Control rules in much of the developed world) - is what happened when European states were annoyed that places like Panama were not pulling their weight when it came to safety and employment standards on commercial shipping, and operated Open Registers (which the Europeans argued were in fact mere "Flags of Convenience") to earn money without spending that money where it was needed.
But if they just annoy you, a mere individual with no rights on the world stage at all, you can go whistle. You are not even eligible to complain to most of the bodies that claim jurisdiction over sovereign entities, another sovereign entity would need to take up the complaint.
a.ns.cf has address 185.21.168.17
a.ns.gq has address 185.21.168.65
a.ns.ml has address 185.21.168.1
a.ns.ga has address 185.21.168.49
% Abuse contact for '185.21.168.0 - 185.21.168.15' is 'abuse@freenom.com'
% Abuse contact for '185.21.168.16 - 185.21.168.31' is 'abuse@freenom.com'
..and so on
I may have not been clear enough by "own", but Freenom are the technical operator end to end for all of these TLDs (and .tk, from much earlier before) and exercise total technical control over them.
