That's true but the complaint that gamblers have (at least those who pay taxes in the US), if you win a big jackpot in January, say $10,000, and over the course of the year you lose all $10,000 so that you're even, you still have to pay tax on the jackpot (as normal income) but can't reduce the amount by the subsequent losses. Yes there is some ability to deduct some losses as expenses but it's not an even trade. It's hard to win at gambling, much harder the way the US tax code is structured. Keep in mind that many countries don't tax gambling winnings at all, so many people feel the US rules are unfair from the start.