The thing I find differs GREATLY amongst business owners is drive.
Talk to others you know who own businesses. Ask them where they see themselves in 1, 2, 5, 10 years. If they tell you things that are just over the top crazy, like they want to be the number one company in their industry, you get a sense they are driven.
If you hear they don't really want to do much more than they are now, then they have reached their goal.
These two people will achieve two very different results.
Ray Kroc wanted to rule the world with McDonalds and the company continues onward even after his death.