I both play poker and have had several business failures so I know what you're talking about. It's my personal opinion that both options are very difficult to rely upon for creating a decent, livable regular income. I'd also say both paths give you plenty of skills you can use in other fields.

If I had to choose between the two I'd pick the business route for the reasons you've listed. But relying on one or the other to work out and pay your bills is "crazy"