I went the other way - I was a business grad and transitioned to a software developer. IMO the soft skills are important no matter what. To be a real thought leader in business it's important to step away from the work and trying to think about the problems you're facing (people problems for example) in lateral ways. A lot of very technical people have a hard time stepping away from the work IMO. You just need to trust people to do the best work that they can. There is a great quote from Steve Jobs: "It doesn't make sense to hire smart people and tell them what to do. You hire smart people and let them tell you what to do."