GoDaddy already has a bad reputation, and they're way easier to stop using than, say, the NFL or ESPN (for most people).
Also, GoDaddy is an internet company, supporting internet oppression. It's kind of like they're trying to throw their own family under the bus.
My point is that if the law is really as bad as we think it is (and it is), then defeating it shouldn't be more than a problem of explaining the law to people. And the Gandhian in me can't help but wonder whether simply informing them is enough?
"Dear America. ESPN & the NFL are about to take away your free porn -- love, Google"