Businesses make money. It’s part of the definition of what separates a venture from a project. Startups aren’t just apps or services that you build for an audience: they’re entities that create and capture value at scale, but are at an early enough stage in their development that how, exactly, they’ll do that has yet to be fine-tuned.
…ghest of rough prototypes and put it in front of a few well-chosen people to gauge their reactions. The lower fidelity the prototype, the more interesting the feedback will be: show someone a realistic wireframe mockup and they’ll give you feedback on intricacies of the UI, but show them a rough sketch, and they’ll give you feedback on the idea. It’s not about asking leading questions; just shut up and let them react to what you’ve shown them.