I've built many production applications using a lot of these techniques and others - it's made money either by increasing sales or decreasing operational costs.

I've built many production applications using a lot of these techniques and others - it's made money either by increasing sales or decreasing operational costs. Here's a more dramatic example: https://www.grey-wing.com/ https://www.grey-wing.com/ This company provides deeply integrated LLM-powered software for operating freight ships. There are a lot of people who are doing this and achieving very good results. Sorry, if it's not working for you, it doesn't mean that it doesn't work.