Prior to SOPA, resistance against increasingly insane copyright legislation was considerably more widespread than it was in the US, partially triggered by events like the trial against the Pirate Bay, Sarkozy's three strikes sell-out etcetera.
There's a reason why we're the ones with the Pirate parties. We didn't need major corporations like Google campaigning to wake us up. Yeah, the defeat of SOPA was a major encouragement and inspiration, but the fight was already on.