They not going to get start anyway. NSW cup is feeder to NRL & league will do what benefits clubs
The NRL is supposed to represent the interests of the sport as a whole, not just the clubs that are members of the Telstra Premiership.
Having functional lower tier competitions of a high standard is in the sport's interest, and losing them will have long term impacts on the popularity of the sport outside of the NRL side's catchments going into the future. Just look at the state of the sport in country Qld as opposed to country NSW were RL's largely on it's knees if you need evidence of that. Or the 'affiliated states' as opposed to NSW and Qld as another example, though there's admittedly a bit more going on in that example.
Most towns and regions have local problems that need local solutions, and limiting the potential and exposure of their local clubs and RL institutions isn't helping them.
I don't like it but that's what's happening. It's why Manchester City etc buys teams in leagues around the world - to push their brand
City Group and other large soccer conglomerations invest in clubs all over the world as a means to hoard talent in their system and to game the international transfer market, not because it's good for their brand.
Owning NYCFC, Melbourne City, etc has had negligible impact on support for Manchester City or vice versa. In other words very few Man City fans could give the faintest f**k about any of the other teams around the world and vice versa. If anything having unified branding has hurt some of their teams as being directly linked to Man City turns some fans off, namely supporters of other EPL sides.
The NRL clubs have similar motivations for wanting control of the state leagues as well BTW, and blokes like Gould have even said as much publicly in the past. They want as much of a monopoly on the talent pool as possible, to reduce the options available to players, and to not have to worry about negotiating with third party clubs outside of the NRL.
It's an anti-competition and anti-consumer move that's great for the 17, soon to be 18, NRL sides, but terrible for everybody else, and it's a travesty that the NRL has so far supported the clubs in this move instead of fighting them every inch of the way.