Indeed gambling is the fastest way to earn huge profit but it will need expert hands, you can even lose in the same way if you lack experience and knowledge.
In Gambling website, you can see review of users how much tokens they won in gambling. But, you don't know how much they deposit to play gambling.
I don't understand how you are relating this statement with "Gambling is way to loss ", it seriously makes no sense.
For you, it might be beneficial through gambling but for the other, it might be a nightmare because even though they are predicting wisely it is impossible for them to win through these gambling websites. Every gambler will gamble only because to make money but they won't bother how much risk involved in it.