It includes both. Gambling is nothing but loss and win. But here the edge house profit is a lot. Some people made a huge profit from this. But it was the there lucky day so they made otherwise it is not possible. According to me gambling is not lose and not profit, it is a just entertainment so for this we are paying money that's it.
If we are an intelligent gamblers who does not want to give our money in gambling sites we should stay away in games where there is a house edge, we can select other games likes sports betting and poker.
I have gambled a couple of times and I can say you that you are going to lose more times then that you are going to win because that has happened to me.
To much luck is required to win these games it is not fair anymore.