While investigating ten games with loot boxes, The Dutch Gambling Authority has stated that they found four games that violate their Betting and Gaming Act. They also warned game publishers to modify their loot boxes to remove "addiction-sensitive" elements by mid-June and went on to say that "Offering this type of game of chance to Dutch players without a license is prohibited."
The Gambling Authority didn't reveal which four games are in violation of their Betting and Gaming Act, but according to NOS, the four games are FIFA 18, DOTA 2, PlayerUnknown's Battlegrounds, and Rocket League. What the Gambling Authority did say is that the content of these loot boxes is determined by chance and the prizes could be traded outside of the game, which means they have market value. While not all of these games allow you to trade within the games themselves, it doesn't stop people from making money on loot box items in other ways.
It seems that if publishers and developers want to continue selling loot boxes in the Netherlands, they're going to have to acquire a gambling license. Let us know what you think about all this in the comments.