Examples of how startups are using the GPT-3 API to solve business problems

https://www.copy.ai/ seems interesting.
Could any copywriters chip in on how good it is in comparison to actual copywriters?

I find it interesting that people actually want to build on something that might already be obsolete in 6-12 months when the next better, bigger model comes along and smashes GPT-3. As all the effort you probably have put into prompt engineering you can throw straight in the bin as every new model will behave completely different.