People are different towards their disposition to certain areas of making money. Some of those your friends are not going the way of small business not because of shyness alone, some people its because of the risk of failure that is keeping them from going forward. When I was in the university too, a lot of my mates were selling food items to make money but its just not for me, I decided to go for service delivery where I tutor other students just to make money.
Everyone of use must not follow the same path and for them not to subscribe to your way of doing things does not make them lazy. However, if that is the only option of survival and they still insist on not doing it, then its best if you stay away from them as that might even drag you from moving forward.