What makes me laugh, is that it has become the norm for people to be kicked out of the venues, and we often here the commentators, pundits and players making reference to it in interviews.
It seems that some people go just for a pi$$ up and have no intention of watching the darts and just want to chant, boo and jeer, and unfortunately, these morons have tickets and those that want to go to enjoy the darts cant. Must have more money than sense.
Sadly, I don't think there is an answer to the proble, and as Kev says above, the PDC has become a money making machine, and it is at the point of no return.