They haven't. Part of the reason the bubble is so bad is that NVIDIA has been giving credit incentives to openai and other llm companies. Essentially giving them money so they use it to buy NVIDIA chips, so they can claim higher sales numbers. But there's no revenue. The AI bubble is 4 or 5 companies shuffling money to each other to inflate numbers so investors inject more money.

The only ones making bank are CEOs when they take their bonuses and cash outs. The companies themselves are bleeding. OpenAI needs something like $700 billion dollars more to survive until 2030. LLMs simply don't make any money. Any savings from ai use has been from layoffs. It will all eventually crash out when it is obvious that AI use ultimately hurts revenue, no matter how much it saves in production.