"I copied a business for sale and turned it into $20K/month"

Adrian, a solo developer from Austin, didn't come up with a clever new business idea. He found a successful app listed for sale on a marketplace, decided not to buy it, and instead rebuilt it from scratch. A year later, that copy was generating $20,000 a month in revenue. His guiding principle: "If something is working, you have a moral obligation to copy it."

Why copying beats inventing

The most common question Pat Walls hears from aspiring founders is "How do I come up with a good business idea?" Adrian's answer is that you shouldn't try. The risk of building something nobody wants is far higher than the risk of copying something that already has paying customers. Adrian's entire approach rests on a simple premise: validation is the hardest part of starting a business, and copying a proven model skips that step entirely.

Adrian found his target on a marketplace called Acquire.com, which lists businesses for sale. He wasn't looking to buy — he was looking for proof. A listing that shows a business generating consistent revenue, with a clear product and a reasonable asking price, is essentially a public validation report. The listing tells you exactly what the product does, how much it makes, and what customers are paying for. That is more reliable than any survey or guess.