Seems like there are two options. (1) You can do it the Dutch way, i.e. every time someone moves they'll have to take their floors out. Those floors often won't fit into your new apartment, so you're just creating lots of waste. Not to mention all the effort associated with it. You will have to remove the floors, but also the person moving into your place will have had to remove the floors from their old place. (2) You leave the floors in when you move out. Then the new tenant/owner can decide whether to keep them or not. In the worst case, both new and old inhabitant will still decide to remove the floors. In the best case, no one will have to do anything and no waste is created.
So what could possibly be gained from the first way of doing things? Genuinely curious if someone knows the reasoning behind this.