Like sports betting the goal is to try and get both sides to bet as evenly as possible and then take your cut off the top.

False. The house just takes a percentage of all bets (usually 0.5%). The price (from 0 to $1) is what fully balances buyers/sellers. The house has no risk of loss. You can say that futures markets or options are gambling with large majority of participants eventually losing everything they put up, but that doesn't mean that futures prices do not have predictive value.

You obviously don't understand what you are commenting on, and there is no valid reason to call what I said, endorsement spin.