That was my whole point, average A- League crowds were for the most part healthy from 2005 - 2018, they are getting better (albeit slowly).
As for bumper crowds during 2005-2018, WSW V Sydney FC derbies would often be sold out (that never happened in the NSL), in October 2016 WSW v Sydney FC had an attendance of 61K at the Sydney Olympic stadium, Melbourne Victory had to leave Olympic park because it was too small.
No one saying the A-League is perfect, far from, and there are serious issues that need to be addressed, but look at what has been achieved in the last 20 years (2005-2025), compared the 27 years of the failed NSL (1977-2004), at the end of the results speak for themselves.
SR I get your pov when looking at spread sheets/graphs and having been in countless meetings and business in my years its not a true indicator whats gone on on the street.
Very easy to point the finger the NSL didn't work compared to modern times 00's on.
NSL derbies were sell outs in their own right in the heydays may I say as well ablient smaller grounds AND as they say not as "inclusive" even thats a cop out imo.
NSL had NO or very little exterior backing, true it pigeon holed itself due to many reasons/factors so its not comparing apples with apples no.
Add in NO media - run very loosely policy on the run but overall it grew and built a foundation from ground up that survives to this day.
Whereas 05 had a sugar daddy and many others + huge corporate backing FOX coverage the vision to be mainstream with the other 2/3 main codes.
Ofcourse it was going to be the next new beaut "event" game to go to, modern tech has advanced and influenced what every single fam does since the mobile came to be, nothing like backwater waiting for news paper articles and Club mailbox flyers getting out to NSL patrons and casuals seriously come on.
Had you seen the massive crowds SMH and Syd Clubs used to get no diff to your mentions of the AL derbies.
Back then it wouldn't have entered their minds much to move to larger stads to cater for more crowd.
I seriously wonder about peoples outlook of the past to present to justify your reason.
Its like comparing my Falcon or Holden of the 70/80's to what I drive today let alone last 20yrs and say, cheez those cars were crap back then they had no glue what they were doing what a fail.
Hope you understand me.