This could be because calculation of a value is impractical, such as in intellectual property cases where the volume of the infringement cannot be ascertained. It could also be because the nature of the injury is subjective, such as in cases of a violation of a person's rights.
There are several potential reasons for this phenomenon, including the challenges of assigning a value to something that is difficult to quantify, such as in intellectual property disputes where the extent of the infringement cannot be precisely determined. Another possibility is that the type of harm caused is subjective and difficult to define, as seen in cases involving a breach of personal rights.