The scary thing is that instead of having to buy an application, you can just reverse engineer it.
Prompts are going to have to become proprietary, or else someone can just use the same prompts to create their own free copy of the software.
From my very limited experience creating effective prompts for AI tools currently requires some experience and imagination. You get different results with small changes in your prompts. It will be interesting to see how this evolves and the ways that it will affect the necessary training to achieve good results. I have been looking over YouTube videos and books on AI on Kindle Unlimited. One of the introductions of a books on AI had a quote from William Wordsworth, “Your mind's a garden. Your thoughts are the seeds. You can grow flowers. Or you can grow weeds.”
Most of what people create with AI will likely be weeds and not flowers, but it all depends on the person and the prompts that they are able to come up with.