As for most other developers, when approached by "business guys" my typical reaction is to polite say no.
I have a reputation on campus as the guy to goto when you have ideas. For the past six months, I have rarely gone a week where someone hasn't "pitched" me an idea that they were looking for a programmer(me!) to code. These guys that come up with the ideas are ridiculous. They don't understand folks that do this are thinking of ideas 24x7 and that their idea which they think is awesome and just needs execution is not so awesome and never will be until you iterate like hell.
“To what end?” was the default reaction when Amazon launched S3 in mid 2000s :)