Matthew, I think the Glory had a big falling out with the State Government over this issue - If I recall correctly, I think the Glory owed the government a heap of cash, and when it wasn't paid they took the free transport out of their ticket.
I remember then transport minister Troy Buswell saying that the Glory were the worst sporting organisation to deal with.
And at Challenge Stadium, Im pretty sure the government and the Wildcats didn't offer free transport because public transport didn't go there.
As for Perth Arena, It may be a condition on all PA events that public transport is included, however the government offers this to all the WA teams (expect the Glory), so the Wildcats may have some involvement with this.