[chongli]

We don’t know what Hans’s resources are. Perhaps his lawyers are working pro bono or otherwise agreed to take his case on contingency, with the rationale being that Hans is a public figure and this case may serve as advertisement for the law firm.

[fastball]

Same point applies, since a firm is not gonna take a pro bono (this would actually be contingency fee) case they don't think they can win, which was what the OP was saying.