They do. One guy with at least 7 figure PnL is a well known forecaster, SemioticRivalry.

Only news article I found on that suggests the guy is mostly just market making against bets he thinks are dumb? No mention of AI.

	▲	bee_rider an hour ago \| parent [-]
		Wait, the original blog post was about competing with top-tier guessers using “AI.” I wonder if there’s more money to be made on the flip side: find the people making dumb bets, at scale, and take the free money they are offering, haha.