Imagine your country offers a tax refund for installing solar panels. Because of this, you decide to buy and install solar panels. Lateron, it is decided that your country shouldn't have offered this refund for this or that reason.
Would you feel that it is fair that you have to pay up, instead of the institution that wrongfully offered you tax refunds?
Would you feel that it is fair that you have to pay up, instead of the institution that wrongfully offered you tax refunds?