Yea, but you don’t have to prove your case to get into court. You have to be able to say, with a straight face, that you really believe that they did the thing

Yea, but you don’t have to prove your case to get into court. You have to be able to say, with a straight face, that you really believe that they did the thing you’re accusing them of. So just because it’s theoretically possible that there’s a path to the facts we see without violating the license, the fact that a license violation is a plausible explanation is enough to launch a court case. After all, the court case including the discovery process and the trial itself are all about determining the relevant facts.