I don't know if I will still have spare time to gamble if I am busy being a sports journalist. These guys don't just give information out without checking it, and I bet they do a lot of hard work to provide news that will satisfy their listeners or readers.
One of the known sports journalists and analysts in American sports is Adrian Wojnarowski, and I believe he is busier conducting analysis about the sports that he covers, and I doubt he gambles his money on the team that looks like a winner for him. Having that fun job, I don't think I will gamble at all.
Are you trying to say that other professionals who find time to gamble are not as busy as sports journalists? How busy can a Man be from his work that he won't find time to relax and have time for himself and do other things? A gambler is always a gambling no matter how busy he might be he will always find time to gamble. Are you telling me that sports journalist you just mentioned spends 24 hours of his time conducting analysis? Someone that has so much knowledge about sports as you said will definitely gamble. It only takes few minutes to place bets in an online casino.