Any why shouldn't each offense be punished? Each victim deserves justice, not just the first few.
Anyway, don't you think that 45 years of prison for locking up people for about an hour (when the police arrived) is ridiculous compared to e.g. the sentence for murder which is far less. It is literally ridiculous.
And yes, the average sentence for murder is ridiculously short; most if not all murderers should never be released. The only exceptions I can think of require pretty extreme mitigating circumstances, like Gary Plauche. On the other hand, a repeat offender murderer will almost certainly never get out. The justice system is rightly much harsher on people who do whatever they did more than once.
Justice should be about punishments proportionate to the crime, getting dangerous/likely-to-reoffend people out of society for a time, and hopefully eventually rehabilitation.
Justice shouldn't be about the victims. Victims should have no say or sway over a criminal's sentence. Certainly someone who has hurt more people likely deserves a worse sentence (if for no other reason than they're probably more likely to continue to hurt people otherwise), but that's not strictly "justice for the victims".
Of course, that's the (my) ideal... our actual justice systems rarely live up to it.
It's not like they're charging them with resisting arrest for every cop he ran from or something.