at best, a team can get one shot during the trip down the floor... make it and there's a chance. miss it, and those long arms have the rebound and are flinging it down court. they are making a living off of this.
they score in bunches and like someone pointed out, they are playing roulette with every number covered. if one guy is having an off night, there's someone on the bench who can come in and light it up, a nearly bottomless pool to tap.