Options are a zero sum game.

Using the casino analogy, Think of the sellers of the contracts as the house and the buyers of contracts as gambler's.

Yes they win big sometimes, but the majority lose.

Unlike casino gamblers though some buyers may have an edge, usually though that "perceived" edge isn't real though.

It's like when tesla is having earnings and you have two people writing DD's. Both are compelling and well researched. One is bearish, one is bullish. When earnings come out one is correct. Was it correct because it's research was more "right" or just because of luck. If they are both compelling DD I would say one person was lucky.