I don't think you are making a correct analogy here. If you build software and that's what you enjoy, then build software, don't build audio systems or design furniture. The actual industry you build software for... well not as important, as long as you are building software as that is where your passion is.

Your day to day activities for your work are very similar if you are building software for a call centre or building software to manage coffee distribution (I am just assuming you might like coffee here). The industry plays a very small part in what you do, but it greatly impacts the chance of success.