Personally, I think it would be easier for all involved to just fine based on a percentage of global annual revenue from the date of the violation to present. If they want personhood so bad, then they can have this too.
Edit for an example: let’s say Intel does anticompetitive behavior 15 years ago and a court case finds them liable for damages today. Add up the last 15 years worth of global revenue, and take a percentage of that.