No so thing, all domain extensions belong to their registries such as .com ICANN, .ws Website.ws, .to Tonga.to and so on. No domain provider will ignore .com complaints seeing there is only a couple icann accredited registrars, all other providers are purely resellers. The best registrar you could use in terms of .com etc is Tucows, Eranet or NiceNic and even those won’t fully keep them online. You could always apply to become a direct ccTLD registrar meaning you could apply as an official registrar for .cx .st etc just apply on their registry website pay the fee and you can put your own Whois abuse and registrar name info of yours so all abuse complaints you’ll get yourself and you will be responsible to take actions or not.