Lydia Mulvey at 2013-06-14 14:47:22:
Not a horror writer myself but I do appreciate a well-crafted, original horror premise.
The Purge appears to have a very high concept behind it. I'm going to play devil's advocate and wonder if the concept itself is what's drawing audiences in rather than the fact that it's in the horror genre.
After all, with the right marketing and a few tweaks, it could be a thriller or action or even a black comedy.
Perhaps audiences are hungry for original ideas, something they haven't seen before, and would pay the price of admission no matter what the genre if the concept is interesting enough.