This tells me that either there were very few commercial users of finetuned models, or they need to decommission the infrastructure to free up GPU's for more valuable projects.
I assume if you reach out they throw some credits at you
The extra trust gained by seeing another customer treated that way easily pays for a few credits for a small number of users.
For example, AWS was one of the first cloud providers. Now there are alternatives, but I still pick AWS because I trust them not to break my dependencies way more than, say, Google
I have much better performance by "prompt tuning" - when question arises, I search 30 similiar examples in training set, and send it to non-tuned GPT and ask the question and get much better performance than fine-tuned older models.