Becoming a domain expert in the new domain you’re creating

When you start something new, your domain doesn’t exist. It’s not defined and nobody covers it. It’s most likely that your new invention is a don’t-care subset of a few large markets. While it’s wrong to target domain expertise in those large (“Financing”, Mobile”, "Agriculture”, etc.) markets, becoming a domain expert in the new domain you’re creating should be one of your long-term targets.