alt Hacker News> It's an entirely different thing; he made a thing, sold it, and then when he couldn't sell more of it, gave it away.
You're right and it's worth pointing out that a lot of open source has the opposite lifecycle: the authors make a thing, aren't sure how to sell it, so they open source it and hope to eventually sell something peripheral, i.e. "open core" with paid plugins or enterprise support.
In these cases, open source isn't a gift so much as a marketing strategy. So it makes sense the maintainers wouldn't see LLM training on their code as a good thing; it was never a "gift", it was a loss leader.
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the authors make a thing, aren't sure how to sell it, so they open source it and hope to eventually sell something peripheral
I know it sucks but we need to admit that this doesn't work and we need to beat the hope out of people. You aren't going to make money later. The very few cases where it worked were flukes or fake.
There's been something lost over time about the philosophy of open source. It appeared at a time when it was becoming apparent that computers represented a new type of technology where you couldn't just "look under the hood". An independent mechanic or machinist could repair a car to spec. A carpenter didn't need original blueprints of the house to create an addition. You could disassemble a typewriter or a sewing machine and with some ordinary skill actually manage to figure out how it worked. With compiled software the bar to understanding by the owner or operator was raised significantly. Open source was about being able to actually work on the thing you owned.
Edit: Note that the original term was Free Software, but there's a long history of politics about why the two are different.