I don't give too much credit on that 2007-2010 post-Zone era. Things started to get a bit more serious since WCL 7 in 2011, because it was the first real big tournament since Zone GGed basically'.
This isn't even true, Arbalet cup 4 and Brain Champion Cup 1,2,3, were all 1v1 tournaments that occurred after zone closed that had bigger prizepools than WCL7... which was a 3v3 4v4 tournament.