Ayn Rand put that in her book. Possibly modeling the character on Nikola Tesla. She was possibly a philosopher, but probably not a scientist.
Static electricity is not an available source of electricity waiting to be tapped. It is the result of the forceful re-distribution of positive and negative charges in air. It takes work to get these charges distributed correctly and there is always loss in the forceful re-distribution, hence, the Laws of Thermodynamics are still in effect.
You still don't have free energy lying around. It's just like other forms of energy; they are all potential forms of energy and the conversion of energy makes it useful, whether it's oil or Hydrogen from water or natural gas, etc.
Actually, if you live in or near a large metropolitan area, it's easy to harness "free" energy from the air--enough to drive an AM radio, even (hint hint).