Tourney TV Ratings

This year the NCAA went with a new format for broadcasting its basketball tournament. Typically CBS controls what games we see for the tournament but this year the NCAA decided to show every game and used four different networks. CBS, TNT, TBS and TruTV (random), broadcasted the entire first two rounds of the tournament and it led to the highest television ratings for the first weekend in 17 years. Apparently I wasn't the only person that thought showing every game was a good idea. I just wonder what took so long?