In cases of judicial review where the courts strike down a law, it's usually not as simple as you're trying to make it.
First of all it's not at all clear in advance that the laws are unconstitutional, and that the lawmakers are "perpetrators". Plenty of times the laws are challenged and the courts uphold them. The whole point is that laws often push boundaries or address areas not previously addressed by the courts, and of course courts are political too. Lawmakers are trying to do what they believe is right for the people, and courts are too, and sometimes they disagree, and all of this is legitimate.
And second, what would it even mean for a court to "penalize" lawmakers? For the government to penalize itself? The lawmakers are elected and often passing laws their constituents voted them into office precisely in order to pass. Do you want to fine the lawmakers and take away their salary? Do you want to fine the people who voted for them? No, of course not. That's ludicrous. Just as ludicrous as legislatures (or governors) fining judges when they think judges decide cases wrongly.
This isn't criminal, it's legitimate disagreement over what policy and law ought to be. Penalizing lawmakers doesn't make any sense. In the end the court overturns something, and if a change is dangerous/disruptive enough the courts place an immediate injunction until the final decision is made. This is how democracies work.
(On the other hand, if a legislator breaks a law personally, e.g. murders somebody, they are tried personally and go to jail just like anybody else.)