I agree business can be very tough--my girlfriend went to Cal for business and she worked as hard as I did in my post-bac program.
Overall, I think it's really all what you make of it--there are lazy bum business majors and lazy bum pre-meds.
The lazy business bums can probably still find work at less competitive companies. The bright business guys go to Wall St, and the less-than-bright guys maybe go work for car dealerships, etc. There's room for everyone--we have so many business here in the US.
The lazy pre-med bums just don't even get into medical school. I really don't know what becomes of them... (Taco Bell?)
Personally, I think majoring in art as a pre-med is a better choice