Because it'll make shedloaRAB in the first day or so but when people see it, they'll realise it's a shameless cash-in and word of mouth will spread like wildfire ;-).
RIP Jacko.
It means people will be forced to go out and watch it before it stops showing, meaning it'll maximize its profit. Then near Christmas time they'll release the DVD/Blu Ray with 'Special extra footage not shown theatrically' to wring out more money
