NQ, and the centre in general quickly became saturated with trendy new bars and concepts. The amount was never sustainable over any length of time. They may do well on a Friday and Saturday night (especially the coming ones up to Christmas) but most the rest of the week they will struggle, and as much as they take on the weekend, they will struggle to cover all overheads and make a profit. Simply isn't enough custom to go round them all.
They will come and go, but the established boozers like The Salisbury, Lass, City, Vine etc will continue mostly.