Uncut Gems: A happy ending?

Uncut Gems is a Netflix original film about a jeweler Howard Ratner played by Adam Sandler who makes a high-stakes bet that could lead to the windfall of a lifetime but simultaneously could end up in his death.

We see throughout the film, Howard takes numerous unnecessary risks as a gambling addict. In the end, even as he wins, he is murdered in cold blood. In a traditional story, this would be a sad ending, a tragedy.

But, viewing the film in the modern era, as a tale not about flying too close to the sun and instead about the greatest catharsis, an ultimate victory, and the immediate cessation of future suffering.

Howard if he continued living would have inevitably found himself in trouble, his addiction had led him to his death after all, but in the film during his greatest high, he is quickly and painlessly removed from any potential of that feeling to be lost by. He dies with his victory.

Is that not a happy ending?