According to Curley’s wife, why isn’t anyone going to leave the horseshoe tournament?

From the text:

“Listen,” she said. “All the guys got a horseshoe tenement goin’ on. It’s on’y about four o’clock. None of them guys is goin’ to leave that tenement.

“Don’t you worry about talkin’ to me. Listen to the guys yell out there. They got four dollars bet in that tenement. None of them ain’t gonna leave till it’s over.”