When you say 'you can't convince him'. It sounds like you're trying to get the customer to do what you want instead of meeting 'their' needs. It's very difficult to 'convience' a person to buy what they don't need. Find out what they need, then let them know you're the one who can deliver the solution.

Adoption will be first by technical people. Our opportunity is to use the tools and deliver value beyond what OpenAI offers. Only a tiny percentage of businesspeople have even a small idea of what is possible for agents. Our opportunity is to provide value to solve problems. It doesn't matter who writes the tools that are used. Also, who here goes out to dinner? Why do you do that? You can cook at home, yet you do go out. DFY (Done-for-You) services will always be big business. Focusing on solving problems, not on which tools are used, is where fortunes will be made. Be well, ~George Budwick.