The NXT IPO was closed early and without notice (that is a fact). That shut out a lot of potential investors who were waiting until the last minute to invest. They, understandably, wanted to get as much information as possible before investing. Let's not dwell on this because it is in the past, but it did happen.
Lesson: don't wait till last minute to invest. IPO was closed on Nov 18 (after 2 months -- but yes it was sudden announcement) and Nxt was officially launched on Nov 24
The fact : NxT genesis block had 73 accounts. 8 accounts were distributed 40% of NxT. BCNext flatly refused to do taint analysis and closed the IPO suddenly.