As Timberball says, The Gold Coast has a history of failures.
Let's look at the population and business at "The Goldy".
Population is basically old codger Victorians seeking the sun after wasting their lives working 43 years in some factory in Werribee making widgets, gangsters and bikies, and oh yeah, gangsters and bikies.
Then, what local businesses do they have and will support the team, there are only so many adult shops laundering money for bikies in town.
The only way Gold Coast would come back is if some dodgy ganster with a hairy back, tight budgie smugglers and large gold chains living in some gregarious marble mansion on one of the waterways wanted to boost his ego.