To throw good money after bad means to try to recoup initial losses by spending more money, but in this context they could afford to throw good money after bad and are already spending money on something that is a lost cause.
Context: "He wasn't sure she'd find enough clients in chance creek, anyway, and they couldn't afford to stop spending money on something that was already a lost cause." Claim: "He wasn't sure she'd find enough clients in chance creek, anyway, and they couldn't afford to throw good money after bad."
Considering the context, is the claim true, false, or unknown?