My point, as clearly stated in the post title, was directly referred to the "illegal MAME sellers" issue. Not to the "change of code licence" by itself. Saying that a commercial-use compliant licence will lead to the spread of unpunished ROM seller is IMO nonsense because ROM sellers will go on doing it no matter what licence MAME will use.
I'm not telling anything regarding the implications to coders this change will bring, as an user I am not allowed to tell my opinion, or at least, that does not count, as Smittdogg says :P (actually, I'm no way tech enough to properly understand the whole matter, so I am not commenting on this subject). All I understood is that this is now more a "political" issue than a "techical" issue, so devs must find an agreement between themselves. The only thing I am sure about is that, no matter what choice will be done, it will NO WAY affect the illegal ROM sellers (and again, please notice that I speak of ROM sellers, not MAME sellers, because THAT is what they do...)