It's a good thing you know everything and your actions never have consequences on others. Fire never spreads, the free market will solve all problems, and the earth is flat.

Yes but if your house causes a black out to our city, or a fire that destroys a city block who's held responsible? You, the electrician? What if people die?

The problem with Randian Objectivism is it normalizes human death to solve micro economical problems. I'd rather have micro economical problems then human death.