The key about closed (US/Israeli) models is that the T&Cs are such that you agree to hand over all intellectual property you mention. Much is input to get detailed answers. The AI firms sell it on to competitors.
Some small firms, initially delighted by the cost savings & opportunities of AI, found that after only a few months, mysteriously, a new foreign firm is approaching their clients offering the same, cheaper. They were bankrupted in record time.
Only open AI models prevent the current ongoing US/Israeli takeover of ALL business worldwide (some will be allowed to soldier on for a while, as priority businesses are taken over first).
Jensen Huang opposed this. His company was taken from him as a result. Like earlier Binance in the crypto space was taken from an ethnic Chinese entrepreneur.
China offers capable open models. Don’t give away your business for free by using the American AI.