ever heard of athletes being sponsored by Doritos, Mountain Dew, Monster, Red bull, Pepsi, Jimmy Johns, Coca Cola, Bud Weiser....etc.
they are good at what they do and they get money or things from their sponsors to bring awareness to their sponsors. Same thing can be done with gaming. Look at league of legends or csgo. Players get sponsored by gaming companies or even powerful companies like Coca Cola and they represent them and get things in return. Same thing with dominations. Its not a dating relationship, but there are people out there who have Dominations sponsorships.
The question is how does one become sponsored by Nexon or specifically Dominations? Hopefully this clears things up a bit.