I lead AI teams at my company. I've advised leadership against any kind of training / fine-tuning anything. We're not in the business of training models. We will never be as good as OpenAI / Anthropic etc. Where the real value in applications is smarter prompting techniques and RAG. There is a lot of room at the bottom in doing "dumb" things and simply feeding models with the right context to deliver customer value.
That's a pretty odd stance. I've finetuned llama/mistral models that greatly outperform GPT4 with just a prompt. You have to know when to RAG, finetune, or RAG+finetune.
greatly outperform GPT4 *for* just a prompt
your overfitting to training data convinces no-one that you created a "better GPT4"