I think this is a very good question. If you're going to farm out the visionary role, how is that still your business? It's theirs. If you want to be an implementor, go work for someone else with a ton less stress.what do you want to do as the owner then?
I have no research but I'd say the vast majority of super successful organizations have an uber passionate owner as the visionary setting the course for the company.
Sure, as the visionary, I still take input from my leadership team but don't believe I won't override even a unanimous executive team position if I don't agree with them. How would your CEO have any chance of succeeding if you as the owner still had the authority to trump whatever decisions he or she made?