Not quite. There was a law passed that said they could put in slots. They didn't like the total tax rates on the slot revenue (which would have been roughly the same as Pennsylvania, or Florida, but not as high as New York), and decided they would close the track instead. It's probably a game of chicken to try to get the Kansas legislature to cut the tax rate.
Sign of the times, get the slots and say it will boost purses for the horsemen, then close the track for racing. Go to Vegas to play the stupid machines and save horseracing.