polymarket (and prediction markets in general) is a great proxy and odds aggregator for sportsbooks. no arbitrary limits, no payout disputes (unless UMA really drops the bag), instant withdrawals and instant liquidity.
best part is that on poly there are 1000000 different bots looking for arbs between dozens of different books and polymarket's orderbook, meaning more often than not you get the best possible price.
an unfortunate result of this market efficiency is that the biggest benefactors are bound to be match fixers and insiders since they will be the most likely to underbid market odds which gets arb bots BRICKED up.
any positions taken up on polymarket will likely be reflected as a number of smaller individual bets across multiple accounts on different sportsbooks as people rush to arb what odds they can.
i'm thinking this could become a threat to sportsbooks sometime in the future as risk management becomes a lot tougher seeing as the "dirty" action is now harder to discern from clean bets as typical match fixer betting patterns break down.
just my thoughts, could be fatally mistaken, would love some insight from industry insiders