This week we hear from Domer - a longtime prediction markets junky who has placed more than $400 million worth of bets using Polymarket. At any point he might have 1,000 or more bets on prediction market sites, ranging from wagers of a few thousand dollars to as much as $1 million, roughly the sum he put on Taylor Swift’s new album sales.

Plus, Bloomberg Businessweek columnist Amanda Mull explains the premium credit card wars, and we discuss OpenAI's forthcoming foray into pornography.