@ZaSar
The thing is your wrong because if Polanski were to be caught and punished today - he would almost certainly not be doing jail time due to his age and the time past. So to say that the punishment doesn’t change is false.
You are absolutely wrong, his arrest warrant is still open and the US has continued to request extradition from various countries he's lived in: if he returned, he would be charged which is why he still hasn't returned there... the authorities confirmed this:
Roman Polanski offered to return to the States to face those rape charges, providing he would be guaranteed no further jail time. His request, Deadline reports, has been flatly rejected. “He forfeited his right to make requests of the court when he fled,” said the office of the LADA.
Deputy district attorney, Michele Hanisee, said: “The defendant is, once again, trying to dictate the terms of his return without risk to himself … His proposed order indicating that this court can reinstate the bench warrant after 180 days if he does not appear, is proof that his return is conditioned on getting the answers he wants. Defendant wants answers – but will only show up if he likes the answers.”