The Tate brothers became wealthy by leveraging Andrew's fame from kickboxing, creating an online business empire based on controversial self-help and entrepreneurship programs, and using social media to build a brand. They became adept at attracting media attention and controversy, which helped to amplify their influence and wealth. Their wealth stems from a mix of digital entrepreneurship, online courses, affiliate marketing, and their media presence, all underpinned by a controversial and provocative personal brand.