You are seeking a person in the upper percentile of intelligence, fluent in a specialized skill set and asking them to pull off some solo Death March that should require 5-10 people minimum, and for what, to be the "coder" while the idea man is running around with half-cent business cards with CEO in front of their name.
Assume this person _is_ this smart, maybe even smarter than you, most likely he too has realized its easier to be the idea man than to be the guy who has to do all the work.
Ergo the world is stuffed with idea men and suffers a dearth of doers.