The Bucks star has become a shareholder in one of the world’s largest prediction markets. It only ushers the NBA further into the fetid swamp of sports bettingCouldn’t he have just started a podcast? “The Internet is full of opinions. I decided it was time to make some of my own,” Giannis Antetokounmpo, one of the four best basketball players in the world, posted in a statement announcing that he was joining the prediction market Kalshi as a shareholder. “We all on Kalshi now.”We are not, but doesn’t the tone sum it up? The universe’s ineffable forces have clearly decided that the ubiquity of sports betting companies is insufficient. There must be new companies, with which you can bet on any outcome – Kalshi competitor Polymarket has hosted markets tied to geopolitical outcomes, including scenarios related to Israel and Gaza, for instance – that incentivize people to treat life’s most important avenues as trivially as a sports game. Kalshi and Polymarket are prediction platforms rather...