Mark Graham, co-founder and Chief Brand Officer at commonsku, discusses his entrepreneurial journey from investment banking to starting Right Sleeve, a t-shirt business that targeted customers valuing premium branded merchandise. He highlights the role of technology in their business, including developing their own ERP system. Mark also talks about Genumark's acquisition of Right Sleeve and the evolution of their software platform, commonsku. He emphasizes the importance of focus, specialization, customer experience, and learning through experience, advising entrepreneurs to prioritize financing through customer revenue over external investment.