Because people are watching there has some hope as well a "Giveaway".

That's why everyone follows him even we all know "Dlive" is not quite popular, we can see the comparition between Microsoft Game Live with Twitch. Even they can bring shroud, they still can't passed twitch.
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Back to the topic, twitch are really fight against gambling activity on their platform. The different of this case, there has some case on their streamer (That's why they take more action) rather than the previous one.