Leaving aside the fact that they were being told by a government that offered them no representation that they had to take a commodity they didn't want and pay an extra tax for doing so, they still offered to pay the full market price of the goods.
Pion lives under a representative government and no one was forcing him to buy any police cars against his consent.
But I'm guessing he has not offered to pay full restitution.
I don’t believe anyone claimed the cases were equivalent. However, in both cases, the injured parties believed they had legitimate grievances against the governments whom wronged them.