I never said Tailwind the company wasn't a business, when I said "a product is not a business" I meant that as advice to creators in general, not in specific to Tailwind; of course it is, it made millions in revenue. What I meant was that even though businesses may exist, having a long-term, durable business model is not always viable.
"selling premade software assets" is a business, and it's the business both Tailwind and Envato were in. Both businesses got hit hard by AI. Check out Envato's homepage now. It's unrecognizable from what it was in 2017, and completely genAI oriented.