I'd say the evidence produced during the 2005 trial contained in letters found at Neverland paint a different picture. Apparently in 2006, Jackson offered Sony the option to buy half of his 50 percent stake in Sony/ATV, allowing the singer to refinance $300 million of loans.
It was said MIchael had mortgaged the catalogue, so AEG would have been at the end of the line if they had been forced to go in that direction.
If he had soooo much money then funding the loan on Neverland would have been a doddle.
He couldn't fund the debt on Nederland because he had no cash. Having $1bn of assets is meaningless unless you sell them, which MJ was always reluctant to do.