Pokie Numbers from the DIA website.
From this graph you can see that Pokie numbers peaked at 25,221 in June 2003. When the government changed in November 2008 they were down to 20,025 (Dec 08) and bottomed out at 18,001 in Dec 2011.
Is 500 more going to make that much difference?
Basically gambling is a tax on stupidity, and in this case the rest of the population gets to benefit from jobs, from a Convention Centre and a Theatre all paid for by the tax on stupid people.