I don't understand what the point of sanctions are. Is Huawei going to stop existing? No. Is the US government ever going to trust Huawei? No. Might as well all

I don't understand what the point of sanctions are. Is Huawei going to stop existing? No. Is the US government ever going to trust Huawei? No. Might as well allow US businesses to make some money selling Huawei spinning rust platters.