The 3rd U.S. Circuit Court of Appeals recently ruled [1] that using AI to train on a competitor's copyrighted material to build a competing product is _not_ fair use. This is a recent ruling (September 30, 2026). GitHub policy has surely not caught up yet and who knows when it will.

> Do you think I should look for a lawyer to deal with it outside the digital world?

Absolutely. This is a copyright infringement case and there is now an appellate precedent to cite. Gather as much evidence as you can and speak with an IP attorney.

[1] https://www.reuters.com/legal/litigation/unsealed-opinion-sh...