This isn’t bail with a small risk of loss paid for by the guaranteed loss of 10% to the bondsman. This is 99% Chance of loss on a settled case with the reasonable expectation that Trump would fight collection tooth and nail, try to pay less than face via bankruptcy etc. It’s a risk of hundreds of millions of dollars that would take YEARS to settle. Years in which lenders could be earning returns if that money was invested elsewhere. 30 institutions said no.
He needs to secure the loan with cash or cash equivalents for the whole shebang. Nobody wants properties which he has already borrowed against even if the net of value and loan are positive to the tune of hundreds of millions its risky and challenging to sell. He should have started mortgaging when the judge told him he’d lost and they were only determining the scope of the loss so he could have obtained favorable terms.