Does anybody doubt that this is a reasonable concern? The Feds would probably throw the book at those guys for every form of IP theft, "conspiracy to commit economic espionage," "theft of trade secrets," and you can't ever forget the ubiquitous "wire fraud."
If I were any of the Deepseek guys, the furthest I'd go on vacation would be Thailand or Mongolia. Even Japan would seem dangerous.
Meanwhile the folks at Meta/Anthropic/OpenAI are totally in the clear, lol. They can scrape libgen, but it's no big deal, don't worry about it.