In all seriousness, they want to ban "dark stores" that serve as primary outlets of these delivery services. Their super efficient in terms of space utilization (should be a good thing) but paper over their store front creating unsightly scenes for busybody neighbors.
They could say a store can't have paper over fronts, but then the dark stores could just not paper over their fronts. Or they could say you have to sell goods, but there are plenty of businesses that don't sell goods. I guess they could sell some goods and have most of their business come from delivery. Or maybe they say X% of your money has to come from in store sales, but that could similarly be gamed and now every business has to start keeping track and reporting this number as well! I don't know anything about Dutch law, but without arbitrary discretion, I don't see how this is enforced without being a huge inconvenience or expense
People have spoken and they obviously value the convenience of these services that its worth putting mini-warehouses in central city locations. Central planners can't arbitrarily decree what kind of city they want. They can try but that goes against the whole ethos of a city being a living breathing place.