No, I don't think you are the wrong type of person for a developer role. You're obviously engaged in building things, and your portfolio of work can speak volumes. You could always show off your work and mention that it's profitable, and some interviewers might forgive your lack of experience when they actually watch you code. Alternatively, you could start by volunteering at a startup and gaining the relevant experience, or take a course from a school like Coursera, General Assembly, or your local university which will teach you more formal principles. Hope this helps.