Don,
I would think it's important to have "dreamers" who have good taste, knowledge of the game and great courses, not too much ego, and ability to work WITH other creative people. In my personal experience, for example, Mike Keiser and Rupert & Jim O'Neal seem to have those qualities, not based on knowing them personally, but based on what they accomplished. In contrast, consider what Donald Trump's taste and ego would bring to what is apparently a fantastic property in Scotland. It's uncertain, at best (again, not based on knowing him, but based on his accomplishments to date).
Isn't another example Michael Pascucci, and Sebonack? He decided well into the project to enhance the design TEAM. He had the audacious thought that he could motivate all these highly creative, strong-willed people to work together, and the team apparently produced a superior result.
And what about the people who grease the wheels of commerce to get permits for a project?
Seems like it's the team of owner-designers-shapers-bureaucratwranglers-etc. that deserve credit, not just the owner who deserves "most" of the credit.