I think the "Open" in OpenAI is about open access, not open source. I'm really glad they are "democratic" in releasing their products. I'd hate if I had to go through a "Talk to our salespeople" form ik order to use them.
With that definition every single big software company is open. Microsoft the most open of all, they don't care if you pirate Windows as it brings them more market share.
No, that's not what they meant. Read the history of its founding. They changed their charter after it was founded.
Then they wouldn't be nearly as good. You're training GPT for them for free (or even paying them for the privilege.)