Comment by dheera
19 hours ago
I think the distinction is that sports betting companies are basically casinos, need to guard their edge, and although they will tolerate some moving of lines, they will kick out players who consistently eat their edge, and will rig the lines at a place where they can still profit.
Different from a prediction market like Polymarket or Kalshi whose income probably comes mostly from transaction fees rather than house edge. Otherwise these platforms wouldn't welcome bots so much. Bots => efficient pricing + transaction volume => profit for them
The sustainability of prediction markets depends heavily on continuous liquidity provision - without bots and market makers, spreads would widen and user experience would degrade quickly
These are all reasons supporting my point as they would make sports betting platforms less efficient meaning it would be easier to find arbitrage in their prices (at least temporarily, until you're booted for being too successful).