Software Publishers' Revenue Per Employee is up ~30% since ChatGPT launch

GPT-4 was released in ChatGPT in March 2023

These start in 2022. I would also be extremely suss if there wasn’t a lag between ChatGPT release and productivity metrics in $, and I would also Expect to see acceleration in productivity, not a linear increase.

I assume all of this is just due to COVID stimulus / work from home / etc?