I'll lose control if I'm not physically in front of the group. I'm afraid I won't look good in front of the group with this technology. People will get distracted in their offices and won't pay attention to me. There are no free lunches involved. There's no socialization after the meeting.
Technologies are unreliable.
Overcoming these and other resistance factors is the key to marketing synchronous technology successfully within your organization. There are many theories on change and overcoming resistance to it. The key to winning the change battle is to identify the most probable causes of resistance and select marketing strategies that will address them directly. People who are convinced of the business benefits of synchronous technologies may have trouble identifying with people who don't, or they may have problems executing a marketing plan designed to convince people of the benefits. One of the keys to getting people to accept synchronous tools is to put them in the driver's seat.