It comes down to: did Zynga break the law as it currently stands (probably), is the law just (imo no).

These are multinational corporations. Applying labels like good-guy, bad-guy, underdog, etc are meaningless. The only question is whether they are lawful. Everything else is left to the consumer.

By the way, Zynga usually beats their competitors because in the long run their clones are better than the originals. Like it or not, but thats innovation.

edited for civility :)