The interest is there if they win. Simple build a successful side and the fans will come back.
We are second tier sport here in Melbourne, the Victory were terrible last year and they were getting terrible crowds, they are winning again and the fans are back. The Melbourne tigers were a powerhouse and then died after they fell away on court. The Storm are the only side that has achieved any level of consistency over a long period and the fans are stable as a result of that
Soccer and basketball are immensely more popular in Melbourne...
Aside from poor results, there might have been something else going on in the world contributing to Victory's small crowds last year.
Melbourne United (formerly the Tigers) were routinely selling out games pre-Covid.
As for the Rebels, they lost a lot of good will among casual sports fans and the media down many years ago, and interest in rugby in general is pretty low which certainly doesn't help...
I think it's going to take more than just winning to get people back through the gates.
[/pessimistic Wednesday morning rant]