You might not pay for GPT-4 but my employer would gladly fork over many thousands for each of our tens of thousands of employees if we could train it on our own

You might not pay for GPT-4 but my employer would gladly fork over many thousands for each of our tens of thousands of employees if we could train it on our own dataset and run it in-house. "In its current form" is also a weasel word. GPT-4 will replace hundreds of thousands of jobs over the next few years. It's already disrupted search, it'll soon disrupt most fields.