Well, most automated systems are that way because the company doesn't really want to talk to you. You can't legislate good service if the company has decided that they don't want to provide good service but want (as evidenced by their actions in e.g. phone systems) to provide either cheap service or no service. I mean, having a person that says "fuck you, don't call us ever again" and hangs up the phone without listening would be a technically valid solution to a law that requires "to let me press 0 for an operator".