Reading between the lines, it does appear that St George were finding it harder and harder to sustain Illawarra financially.
What with the pokey tax and the Wollongong Trust haggling over their cut, the money has to come from somewhere. Plus there was the fact Saints had an alternative to WIN... Kogarah. Call it leverage if you like but the bottom line is that it is cheaper for Saints to play at Kogarah.
I imagine the pitch to WIN would have been pretty straight forward and along those lines. That is, 'do you want the Dragons playing in Wollongong? If so, you have to buy in'.
Being an interested party, WIN no doubt saw a loss coming their way if Saints played less games in Wollongong.
$6 million isnt that much when you consider that they've bought themselves guaranteed revenue for the next six seasons.