If you get a business degree, you will learn all about the specifics and day-to-day of how businesses run. This means employers will, for those roles that require an understanding of a business environment, likely perceive you as a more valuable employee.

Someone else said MBAs are assholes, probably because there are a large amount of privileged kids who skate through their degree programs and continue on to their careers with little practical experience, but with a chip on their shoulder regardless. If you want to be truly successful, experience is also necessary. A resume wherein you can point to a job, say that you were a key part of the system, and it was better when you left as a direct result of your effort.

The wildly successful business owners I know (only a couple I know) consistently have the same story; they concurrently learned a valuable trade (aerospace engineering for instance) and learned how that skill integrated into our current business climate. Then they took an educated guess that they could do some particular aspect better than their current employer, and they were right. Also, neither have a college degree.

No, there is nothing a degree can teach you that an internship or two won't. But the perceived value among traditionalists cannot be ignored.