I thought about doing a home automation business in the past but found out that industrial automation pays a lot more right off the bat. Factories will pay handsomely to make sure their machines function perfectly and repeatedly. Home owners are a lot more budget conscious since there isn’t a business case behind their spend. And if they have that kind of disposable income, they typically don’t have the time and patience for you to figure it out as you go and want an established company with lots of personnel and dedicated support.

Not trying to discourage you, but just sharing my own perspective.