VERY well said! (even for an AussieUntil I read this I actually thought these problems were isolated to Sydney. Many venues here (and I'm speaking about original bands) have a deal where they give you a bunch of tickets to sell and you get to keep the takings from a certain amount of them-and that is your payment.
I do a jazz gig where the guy who organises the gig doesn't get paid anything, he pays the band so he can do the gig. The problem is everyone is having to take on these opportunities with the hope that the money they forego is justified by the amount of exposure they get. The problem is though, that, especially in Sydney, people just aren't going to see bands. In a "society" where people can be "social" by sitting in front of a computer, people don't seem to need to get out as much. Take also into account people spend so much money on their home theatres, xbox's etc and the fact that now, expendable income is a thing of the past for some, you start to realise what's happening to the live music scene. (here anyways).
I think many venues that don't have music as it's sole income realise that their will always be someone who will gig for free for the "exposure" and this lack of regualtion is what really hurts the money side of things.
How many other careers exist where you train your whole life in something, spend thousands of dollars on your work tools and equipment, just to get to the job and hope you are paid a drink, maybe a meal and a couple of bucks.
Maybe I should have studied law after all......
...kidding, of course)+1,000,000,000,000