That people still depend on their doctors to make health care decisions. That a person's health isn't a commodity. That the health care system is too complex to Webify . That people are too worried about security risks. Take out health references and put in finance ones and you have the former Merrill Lynch party line.
Online trading is arguably complex.
People used to depend on their brokers to make investment decisions for them. People used to be worried about security. There are an estimated 20,000 health related Web sites. If you're suffering from cardiac arrest, please press 7. Ultimately, it will have to trickle down to the end user.