I found this article a bit more informative:http://www.brisbanetimes.com.au/act-news/constitutional-reform-mooted-as-acts-heritage-railway-society-changes-track-20160112-gm4p06.html
eg, this quote:
'Many speakers at the December meeting said they were concerned about the way limited resources were being spread across a wide range of refurbishment and restoration projects to the detriment of the society as a whole.
'One speaker, who took part in a comprehensive audit of rolling stock in 2011, said earlier attempts to rationalise assets had failed.
"People resisted making the hard decisions [if it involved getting rid of their favourites]," he said. "The outcome was no cars were disposed of due to the vested interests of various members."