It is their decision that will be followed. To me personally, however, it does not sound gambling at all.
Those elements of surprise and chance are not enough a reason so that those loot boxes games should be considered gambling. Buying a mystery box is not gambling.
At first, I saw it as a harmless way for players to spend their money and for that gaming platform to earn some but in the long run, players are kind of addicted to buying them. They are after rare items and the chance of getting them is low compared to normal ones. They will not stop until they get themselves a rare in-game item and that might take a while and take some money that is why I consider it as gambling.
Well, in a broad sense, it could possibly be gambling. In the same manner that life is a gamble.
Online games always have ways to make sure the gamer won't stop playing. There are items to look for, levels to pursue, skills to unlock, heroes to be accessed, ranks to achieve, golds to earn, stars to acquire, and so on and so forth. All this is for the players to get hooked on to it.
And then they are providing premium access, load cards, and other ways for the players who wish to spend and receive a certain exclusive offering in return. This is taking money from them.
However, all this is not betting or placing a wager.