I'll put in perspective for you...
Back in 2010 shortly after Spain won the Soccer World Cup, FC Barcelona were in debt €500,000,000 - that's right, half a billion EUROS. They ought so many of the of the topc players in the world (who's price would've increased after the World Cup) and also had to re-sign players who were off contract, and did so without a care in the world. Did they declare bankruptcy? No. Why? Because Nike bailed them out. Nike make that much money of them by selling Barcelona merchandise, that they will never let them die.
That's how it works in the business world. No matter poor managed or run a team is, if another entity can make money off them, they'll save them.
Betting companies here will never let the NRL die because of how much money they'll make off them.