Most of those teams started as small suburban clubs & grew out of area - like Redcliffe.
Only Clippers, Jets & Fremantle are a similar situation & each of those clubs still very much younger brother.
In most cases that isn't true, in fact I can only see 1 example among the above (City, but they were only a parish/suburban club for 14 years before they refocused) and maybe a couple more (United and Celtic) but you'd really have to stretch the definition of suburban club to suggest that United and Celtic were set up as a suburban clubs.
To be fair, I don't know enough about Borca or River Plate's history to know if they started out as suburban clubs, so maybe they did as well.
But lets assume that they did all start out as suburban clubs, there're very obvious reasons why they aren't suburban clubs anymore, and why we should be avoiding setting up suburban clubs if we can avoid it!
Also you will always have a big brother and little brother, it's impossible to have two clubs that are truly on even footing, however the disparity between, for example, the Eagles and Fremantle is much smaller than the disparity between the bigger Sydney clubs and the smaller ones, and both the Eagles and (I think) Fremantle are bigger than all of the Sydney clubs.
What do warriors bring? Small TV deal with nz sky? Melbourne draw 20,000 viewers in home city. Parramatta, South's bring far more fans to game & therefore contribute more to broadcasting deal - NRL main source of income. More fans subscribing to foxtel to see Sydney teams than Melbourne, Auckland or Canberra.
Do you know how much the NRL's deal with Sky is worth?
Because all I can find is estimates and not the actual numbers.
But the value of the deal it's self doesn't really matter, the fact that without the Warriors in the competition that that deal would be worth less than a quarter of what it's worth now is what matters.
They also add a time slot and value to advertisers and sponsors, all extremely valuable things.
Also not everything is about raw rating, and stop using the big Sydney clubs to try to justify the existence of the smaller ones, South would still exist how they do now if Wests didn't exist.
Big broadcast deal is direct result of tv ratings in Sydney of local clubs. Only Broncos in Brisbane have similar impact. Melbourne have been around 20 years with still next to no audience. Afl has same problem in Sydney & Brisbane. Heartland renerates the income.
All you've said there is that there are big clubs in Sydney that are valuable to broadcasters, but nobody is arguing that.
However what people are saying is that not all Sydney clubs are made equal and if you are really going to argue that the Sharks or Sea Eagles are more valuable than the Storm, Warriors, a potential Perth team, etc, then there's no helping you.
And the problem with Redcliffe is they more resemble a Manly then they do a Parramatta, and really in an ideal world, everybody with a brain would prefer they resembled any of the examples I gave you before.