I'm curious how CEG conducted their study on wealthy and affluent business owners. How many of those high earners were skilled specialists such as surgeons and lawyers who owned their own firms/practices. Those are businesses that dont always scale well and the owners are sometimes reliant on others to help them manage the actual business side of the services they're providing.

Not discounting the value of owning a business (started my first small business last year) just wondering how a "business" is defined. I wpuld excluded sole proprietors who make money off their skills alone.