Home Automation businesses?
CyberFonic: Integration is the big challenge. The proprietary solutions are either expensive or very limited.  Open source solutions tend to be oriented towards DYIers with the right tools and attitude.As the 12:00 blinking VCR phenomena shows, the majority of people are just not into doing this sort of stuff for themselves.  Only a full service solution will meet their needs and to do that well is very expensive and people change their mind when they find out how much it is going to cost.In 2009, it still is for the Rich and Famous and the DIYers.