It's almost gambling, but then in the way that it doesn't feel like that for people and institutions. I however are more interested to see how this will actually impact this market in the long term. If we look at how the general public reacts on this, it's rather negative, or at least conservative with a mild negative tint to it. To a certain extent I can understand people's concerns, but there is no point into one sided blind rage when it hasn't even been reality yet. In the same way that people here fear the consequences of these future markets, the platforms offering these future markets worry about Bitcoin's volatility.
Which is why they have all sorts of policies in place to halt trading when the Bitcoin market bounces up or down with a certain percentage.