Wow.
Well, I'll turn it back on you. What evidence do you have that loot boxes would not have come about in something very close to their current form if the Japanese game industry did not exist? And "because I work in the games industry" is not an answer.
I mean, this is a ridiculous hypothetical in the first place. But the broader point is that the fault for the current condition cannot be blamed solely or even primarily on the Japanese industry alone. "The merchants and the traders have come; their profits are pre-ordained."
In many countries it is required by law to specify to the user what is being purchased. Because of this, it is very easy to track / verify that one system is equivalent to a specific form of gacha.
Then, it is widely accepted that loot boxes are based on gacha. The Wikipedia article for loot box has more context in this regard.
Btw you are talking with someone who worked in the games industry so unless you've got certain credible source to refute what I am mentioning here just concede the point.