It's a good article for people with no strong background in NLP or LLMs. Gives a comprehensive overview on how this could be applicable for startups.
Enterprise, not so quite, there are a lot of other stuff to consider like points missing, ethical application, filtering, security, points that are very important for enterprise customers.
Also, in-context learning is just one way to apply LLMs, there are way more applications like few short learning, fine tuning, depending on cost and application involved as I've highlighted here