> After all, the British Museum, the main example for restitutions, is located in a global city, given completely free access to its huge collection on display and pays for preservation. The global cultural value it adds is much larger than individual museums all over the would could provide.

Firstly, as others have pointed out, the British Museum is not freely accessible to the vast majority of the world population. The world is larger than WEIRD countries and the richer sections of formerly colonised countries countries

Secondly, it is not the British Museum's decision to make about whether the cultural artifacts of other people is more valuable to "global culture" than it is to the culture it originated from. Let's take an example: India and China both have a population more than double that of the EU. Which means a museum located in either country provides visa-free access to billions of people with relatively cheap travel.

Would that be an argument to move the Girl With the Pearl Earring from The Hague's Mauritshuis to New Delhi or Beijing? Would it be an argument to move the painting to the British Museum? Indeed why not move the entire Mauritshuis to the British Museum? After all London receives far more visitors than The Hague does. Surely the global cultural value of those artifacts is greater than the value that the Dutch place on it.

Consider that you apply this logic to extract all Dutch artwork from that country and place it in a second country. Consider that the second country was largely responsible for such extraction, which included not only cultural artifacts but also wealth. Consider that the second country now places visa restrictions that make it harder for Dutch people to visit the country and even if they did, the cost of actually doing so would largely exclude most Dutch people. What effect would this extraction of cultural heritage have on the Dutch?