Anthony Gaughan has written this piece for The Conversation:

Thus, while Jeb Bush’s fund-raising numbers sound impressive by previous standards, his campaign war chest doesn’t scare anyone today. No candidate will monopolize Republican fund-raising in 2016. The flood of money unleashed by Citizens United means there is plenty to go around for everyone, including candidates openly hostile to the GOP establishment.

If Jeb Bush is to win the nomination, he’s going to have to do it by winning over rank-and-file Republican voters. The days when the party establishment could use its fund-raising powers to control the nomination process are long gone.