The Gracies have been a phenomenon in the martial arts. They have shown just how effective BJJ and the grappling styles are, defeating many highly skilled strikers. That being the case though, if BJJ is so effective why isn't everybody doing it instead of the striking styles? Yes, BJJ has gained tons of popularity over recent decades but it still has not overtaken the striking arts as the most practiced art. In this day it shouldn't be too hard to find a BJJ school if you look for one but you will still find that most martial arts schools primarily teach striking styles and most people who train in martial arts today train in a striking art not BJJ.