The Koerner Office - Business Ideas and Deep Dives with Chris Koerner The Most Profitable Solo Business You've Never Heard Of⏐Ep. #293
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Apr 21, 2026 
Brett Williams, founder of DesignJoy who built a one-person subscription design agency into huge recurring revenue. He explains productized services, launching via Product Hunt and scaling from $10K day one to peaks near $200K/month. Discussion covers AI-first design, practical prompting and favorite tools, pricing growth, and which productized agencies are ripe to start now.
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Lower Time To Value Wins Productized Services
- Productized services lower Time To Value by letting customers buy off-the-shelf services without calls or lengthy proposals.
- Brett sells design via subscription and delivers fast turnarounds (e.g., a homepage back by tomorrow).
Use Small Teams To Undercut Traditional Agencies
- Charge less than traditional agencies by removing heavy headcount and operational overhead.
- Run a small team or solo to offer faster delivery, lower price, no contracts, and a pauseable subscription model.
Design And Branding Become The Real Moat
- As AI makes building products easier, differentiation shifts to branding and design as durable moats.
- Brett argues hundreds will copy a product quickly, so visual identity and distribution become the competitive edge.