The crazy cannabis legislation in the Netherlands

In the Netherlands you are not allowed to grow weed, you are not allowed to transport it, you are not allowed to sell it, Only a coffee shop is allowed to sell weed, but they are not allowed to buy it either... Coffee shops are also only allowed to stock 500 grams of cannabis, so sometimes shops have to be supplied with new stock of weed several times a day, which then has to be illegally brought to the coffee shop, .. Yes, the Netherlands and its tolerance policy, it doesn't get much crazier