Do you think Effect.AI stands a chance against Amazon M-Turk? Amazon's payouts are currently low, but once they see a viable competitor they may decide to raise rewards. Amazon has incredibly deep pockets and will win any battle if it comes down to endurance. How could Effect.AI win?
I think there's plenty of place for both in the market with the growth of AI market in general. Also the phase 2 and 3 of Effect is not available on Amazon

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I agree that this market is big enough for more than one platform. Also I don't think that Amazon will rise the payouts because of competition from some small blockchain project, unless most of their workers would move to Effect M-Turk.