>In the future if you can't trust your AI system to perform a function well, you can switch to another.

All will perform roughly at the same level, just like today. It doesn't matter what provider you switch to, they'll all going to make mistakes because performing at a high human level requires far more business context and domain knowledge than is going to fit in even a few million tokens. Humans have incentive to learn and improve, LLMs lack even the ability to improve, as there's been pretty much zero progress on live learning and it's theoretically impossible for a fully-trained (saturated weights) LLM to learn new things without forgetting old things.