I understand all of that; but in a volatile time that we are in now I.e. IC being set up & new broadcast deal, the NRL needs the least distractions it can get.
Also in my opinion, the sharks situation can be used as leverage for the broadcasters, e.g. they can say " oh, your code isn't stable, we don't want to invest this much money just incase one of your teams folds and we are down 1 game a week".
Also sharks crowd numbers aren't the worst, there are other teams whom have had more success than the sharks yet, draw less.