The fate of the North Sydney Bears can't be overlooked too.. they VOLUNTARILY decided to relocate (OK, just up the road to Gosford), and paid a huge price for it.. then didn't get any support from the NRL to remain a standalone club at top tier when weather delays cruelled their plans.
I think if the Bears had received the support from the NRL to get through their relocation issues & gone on to thrive there, other clubs would perhaps be a little more open to moving too.
Norths and Newtown.
Both tried moving and got FITA.
As a contrast to them the Western Suburbs were helped by the NSWRL to move to Campbelltown in the 80s once they'd effectively stolen that opportunity from the Jets.
Look, I get what both of you are getting at, but I think given the circumstances in both cases that it's too simplistic to say that both the Bears and Jets weren't helped to relocate and that that is a big reason why other clubs refuse to relocate.
IMO it wouldn't matter if the Bears and Jets where the most successful clubs in the league right now, most clubs still wouldn't even consider relocation as a realistic option.
Take the AFL; the Swans have been a massive success, yet no other AFL team has even seriously considered relocation. Before you say it, despite what many think the Lions didn't really relocate, and they didn't willingly merge with the Bears either, which BTW was more a hostile takeover than a merger anyway.