Ok, this is just a non-technical version of what @souterrain posted.
If I am the CEO of a local supermarket or a butchery, I don't need to know my domain registrar as they are not a major factor to my business. My website being down for 1 week also might not make a big difference. My customers deal with my company face to face.
But if I am a CEO of an "Internet company" and my customers deal with me via my "domain", I damn well ensure that I have a weekly quick call with the guy who could block my domain abruptly.
If I am the CEO of a local supermarket or a butchery, I don't need to know my domain registrar as they are not a major factor to my business. My website being down for 1 week also might not make a big difference. My customers deal with my company face to face.
But if I am a CEO of an "Internet company" and my customers deal with me via my "domain", I damn well ensure that I have a weekly quick call with the guy who could block my domain abruptly.