At a certain point, Satoshi owned nearly all the bitcoins in existence. What good is a coin distributed to one person? None, of course, but over time, bitcoin became distributed to hundreds of thousands (via people buying or burning money on electricty/hardware), turning it into the giant it is today. Nxt was at one point distributed to 80ish people, but that was well over a year ago. Now (via people buying or earning Nxt), it is spread among thousands and better distributed than most alts.

The initial seeding of Nxt matters less each day, as more and more people discover it and it becomes more distributed and more useful.