Bill Gates, Mark Zuckerberg, Sergey Brin, Larry Page, Steve Wozniak, Steven Jobs, Paul Graham, John Warnock, Charles Geschke, Michael Cowpland, Michael Morhaime and the list can go on.
These people also found awesome help, that's true, but you can't be a leader unless you have the capability of fixing other people's screwups.
unless you have a ninja that dreams in Scala,
craps Redis and eats node.js for breakfast
Personally, I am ambivalent about people like that. Curiosity and experimentation defines a smart individual, however crapping Scala, Redis and Node.js all over a project that doesn't need these newer technologies is simply bad engineering that can sink a product faster than a "glorified oDesk coder" could.