As someone who makes their living doing PMs this is far from the reality. There's lots of markets that are beatable without a latency edge. Also anyone can apply to be co-located with their servers if you do KYC.
While this is true, retail click traders are still not remotely on the same playing field in any regard as an electronic trading desk who takes the market seriously.
I think it 100% depends on what markets you’re looking at.
If you’re betting/trading on sports (80% prediction market activity by volume, you are 100% up against Susquehanna. Doubly so if you’re predicting combos because there is not nearly enough liquidity.
There are multiple parties involved when you place a trade on a prediction market and all of them get paid.
I’m not stating that there’s no market a relatively unsophisticated investor can take advantage of just pushing back on the idea that PMs are PvP