When we think about the implications of non-compliance with F/OSS licensing the considerations tend to be around legal exposure and concern that the conditions of a reciprocal license, e.g. the GPL, may propagate into proprietary code.
The ScummVM project published a press release a few weeks ago saying that some games for the Nintendo Wii console made use of ScummVM without complying with the terms of the GPL.
The Software Freedom Law Show is a bi-weekly discussion show of legal issues in the FOSS world from the Software Freedom Law Center offices in New York.