Actually that's exactly why it's not a feasible move for the time being...
The Central Coast is within driving distance of 10 other clubs, the NRL is a recognised and well supported product on the CC, and it's a relatively small market that would be incapable of supporting it's own club unless the clubs managed to get a relatively high take up locally (so relatively large average crowds, 20k plus at least).
All of that means that the NRL doesn't need to crack the CC market cause they're already doing good business there, it's well within driving distance of more than half of the comp if any fans really want to attend regularly, and it's a small market that can't even support an A-league team without leaning on the Sydney market and the NRL cannot afford to have another club operating in Sydney.
We differ on that one. The proximity is a bonus!