Johnson says look at Amazon.com. When the online retailer launched, its first holiday season was lackluster, but now it is embedded in our lives. The whole idea of convenience, the whole idea of options, choice, transparency is an expectation that we have in the rest of life and [are] bringing lock, stock and barrel into health care, she says. Levin says the Aon exchange is growing every year, and the number of inbound requests for proposals grows, the number of carriers grows every year, and the momentum really does feel like its not going to reverse.